Williams, D., & Churchill, D. (2006). Ulcerative proctitis in men who have sex with men: An emerging outbreak. BMJ Publishing Group Ltd.
シカゴスタイル引用形Williams, Deborah, , Duncan Churchill. Ulcerative Proctitis in Men Who Have Sex With Men: An Emerging Outbreak. BMJ Publishing Group Ltd, 2006.
MLA引用形式Williams, Deborah, , Duncan Churchill. Ulcerative Proctitis in Men Who Have Sex With Men: An Emerging Outbreak. BMJ Publishing Group Ltd, 2006.
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