APA Style

Cohen-Kettenis, P, T., Pfafflin, F. (2003). Transgenderism and intersexuality in childhood and adolescence, making choices (1). London: SAGE Publications.

MLA Style

Cohen-Kettenis, Peggy, T.., Pfafflin, Friedemann. "Transgenderism and intersexuality in childhood and adolescence, making choices". 1 London: SAGE Publications, 2003. Text.