Waugh, T. (1996). Hard to imagine: Gay male eroticism in photography and film from their beginnings to Stonewall. Columbia University.
Chicago-referens (17:e uppl.)Waugh, Thomas. Hard to Imagine: Gay Male Eroticism in Photography and Film from Their Beginnings to Stonewall. New York: Columbia University, 1996.
MLA-referens (8:e uppl.)Waugh, Thomas. Hard to Imagine: Gay Male Eroticism in Photography and Film from Their Beginnings to Stonewall. Columbia University, 1996.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.