Here are famous Japanese books about selective mutism.
Keiko, K. (Eds.). Kanmokunet (2008). Bamen Kanmoku Q&A --Youchien ya gakkou de oshaberi dekinai kodomo tachi (What is selective mutism? --How to help children who can't talk in school). Gakuensha: Tokyo.
At present this is the newest book about selective mutism written by Japanese. Kanmokunet, the author, is a non-profit organization for children with selective mutism. This book seems to be written for parents rather than professionals. This book comprises of three chapters. Understanding selective mutism, dealing with selectively mute children, and practice of overcoming selective mutism. A lot of columns by parents and former or current sufferes are inserted in the book.
McHolm, E.A., Cunningham, E.C., and Vanier, K.M. (2007). Bamen Kanmokuji he no Shien -- Gakkou de Hanasenai Ko wo Tasukeru tameni (Eiko, K and Keiko, Y, Trans.). Taken Publishing: Tokyo. (Original work published 2005)
This is a Japanese translation of Helping your child with selective mutism.
Yoshifumi, K., & Eiko, K. (1994). Bamen Kanmokuji no Shinri to Shido -- Tannin to Fubo no Kyoryoku no tameni. Taken Publishing: Tokyo.
This was a standard book of reference on selective mutism in Japan until Bamen Kanmokuji he no Shien was published in 2007. And this book is the first Japanese book available to many people on the theme of selective mutism. This book seems to be written for various kinds of people, especially teachers. This book comprises of four chapters. Characteristic of mutism, cause of mutism, diagnosis of mutism, and guidance on dealing with children with selectively mute children. The title of the book can be translated into English as The psychology and guidance about children with selective mutism.