Uitgevers American Institute of Bisexuality, Inc.

Cover for Fritz Klein Md · The Bisexual Option: Second Edition (Paperback Book) (1993)

The Bisexual Option: Second Edition (1993)

Cover for Fritz Klein Md · La Opcion Bisexual: Segunda Edicion (Paperback Book) [Spanish edition] (2013)

Spanish edition

La Opcion Bisexual: Segunda Edicion (2013)