Klein, F., & Wolf, T. J. (1985). Two lives to lead: Bisexuality in men and women / edited by Fritz Klein and Timothy J. Wolf. Harrington Park.

Klein, Fred, and Timothy J. Wolf. Two Lives to Lead: Bisexuality in Men and Women / Edited by Fritz Klein and Timothy J. Wolf. New York [u.a.]: Harrington Park, 1985.

Klein, Fred, and Timothy J. Wolf. Two Lives to Lead: Bisexuality in Men and Women / Edited by Fritz Klein and Timothy J. Wolf. Harrington Park, 1985.