Kristal, N., & Szymanski, M. (2006). The bisexual's guide to the universe: Quips, tips, and lists for those who go both ways / Nicole Kristal and Mike Szymanski (1. Auflage.). Alyson.

Kristal, Nicole, and Mike Szymanski. The Bisexual's Guide to the Universe: Quips, Tips, and Lists for Those Who Go Both Ways / Nicole Kristal and Mike Szymanski. 1. Auflage. New York: Alyson, 2006.

Kristal, Nicole, and Mike Szymanski. The Bisexual's Guide to the Universe: Quips, Tips, and Lists for Those Who Go Both Ways / Nicole Kristal and Mike Szymanski. 1. Auflage. Alyson, 2006.