Here is a list of other publications on hearing voices, if you click on the title of the publication, you can find more details and how to purchase it:

Listening to the Silences by Roy Vincent
“For twenty-eight years, I have been experiencing inner voices and physical presences in ways that would normally induce the label ‘schizophrenic’ – except that I have never been ill from this cause.”.
More information and how to purchase the book here

Phantom Voices Ethereal Music & Other Spooky Sounds: Musical Ear Syndrome: Unravelling the Mysteries of the Auditory Hallucinations Many Hard of Hearing People Secretly Experience
by Neil G. Bauman, BookSurge Publishing , 2005

Book Description from Amazon
“When hard of hearing people begin hearing phantom voices or music, they immediately worry they are going crazy. After all, only people with schizophrenia and other mental illnesses hear such sounds, right? Wrong! The truth is, thousands of sane hard of hearing people experience the spooky phantom voices. music and other sounds associated with Musical Ear syndrome. This book explains what these sounds are, what causes them, what you can do to alleivate or eliminate them, and how you can regain your peace of mind.”

Hearing Voices: Hillary, Angels, and O.J. to The Voice-Producing Brain
By Doug Holmes, Shenandoah Psychology Press, 1998

Brings together most of the perspectives on hearing voices that are important to ordinary people and to mental health professionals. Public personalities, ordinary people, combat veterans, and psychiatric patients are considered. The normality of hearing voices is emphasised.

The Day the Voices Stopped: A Schizophrenic’s Journey From Madness to Hope
by Ken Steele and Claire Berman; New York, Basic Books, 2001

“Ken Steele, born in 1948, started having “auditory command hallucinations at age 14. He dropped out of high school and moved from his family home in Connecticut to New York City in 1966 to live on his own. By this time, he already had a diagnosis of schizophrenia and had attempted suicide. His father was resistant to recognizing mental illness in his son, and his mother was silent. His early years in New York City included employment as a copy editor and as a male hustler. In 1967 Steele was admitted to Bellevue Hospital and Manhattan State Hospital, marking the beginning of what would be a decades-long, coast-to-coast odyssey of psychiatric hospitalizations.

It was not until the 1990s that this odyssey ended and Steele went on to become an active advocate. Steele died in October 2000—of heart failure, peacefully in his own bed—at the age of 52, having become by that time one of the most productive and better-known advocates for individuals with chronic mental illnesses. ” (Review from Psychiatry Online)

Hearing Voices: A Common Human Experience
by John Watkins; Melbourne, Australia, Hill of Content Publishing Company, 1998

In this book, the author aims at improving the understanding of the experience of hearing voices and at developing a more helpful attitude toward those who hear them. The book gives detailed descriptions of the variety of ways in which “normal” people have voice-hearing experiences. Research studies are reviewed. The author explores spiritual experiences of various religious leaders in an attempt to prove that “hearing voices” is not uncommon and that it is not an unequivocal symptom of severe mental illness. He emphasizes that “hallucinations exist on a continuum with normality and any and every gradation of experience is possible.” Watkins suggests a variety of psychological, social, spiritual, and biological factors that are responsible for auditory hallucinations.

Irgendjemand lacht in mir
von Sven Ramos-Bulik; Susan Schmidt, Mensch&Buch Verlag, 2007

“Was ist zu tun, wenn man feststellt, dass man nicht mehr allein ist, auch wenn man ganz allein ist? Was ist zu tun, wenn immer noch jemand da ist, der den eigenen innersten und geheimsten Gedanken zu- oder widerspricht oder sie einfach belächelt? Ständige Verunsicherung und Angst an der Tagesordnung sind?
Ramos Tagebuch gewährt einen Einblick in die Welt eines “paranoiden Schizophrenen”, der durch seine “Erkrankung” aus der Welt wie wir sie kennen, hinauskatapultiert wurde. Ramos hat nach langem Irren seinen Weg gefunden. Er hat diesen Weg mit einem wesentlichen Ziel versehen: Der verständnisvolle Umgang mit der “Schizophrenie”. “Schizophrenie-Erkrankten” ein Stück Hoffnung zu geben. Drogengefährdete oder drogenkranke Jugendliche ein Stück weit wachzurütteln.