Waugh, T. (1996). Hard to imagine: Gay male eroticism in photography and film from their beginnings to Stonewall. Columbia University.
Citazione stile Chigago Style (17a edizione)Waugh, Thomas. Hard to Imagine: Gay Male Eroticism in Photography and Film from Their Beginnings to Stonewall. New York: Columbia University, 1996.
Citatione MLA (8a ed.)Waugh, Thomas. Hard to Imagine: Gay Male Eroticism in Photography and Film from Their Beginnings to Stonewall. Columbia University, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.