Παραπομπή σε μορφή APA (7η εκδ.)
Waugh, T. (1996). Hard to imagine: Gay male eroticism in photography and film from their beginnings to Stonewall. Columbia Univ. Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)
Waugh, Thomas. Hard to Imagine: Gay Male Eroticism in Photography and Film from Their Beginnings to Stonewall. New York: Columbia Univ. Press, 1996.
Παραπομπή σε μορφή MLA (9th εκδ.)
Waugh, Thomas. Hard to Imagine: Gay Male Eroticism in Photography and Film from Their Beginnings to Stonewall. Columbia Univ. Press, 1996.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.