Lua APA (7ú heag.)
ebrary, Inc, Sileri, P., & Gaspari, A. (2012). Anal fissure: Symptoms, diagnosis and treatment. Nova Science Publishers.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, Pierpaolo Sileri, agus Achille Gaspari. Anal Fissure: Symptoms, Diagnosis and Treatment. Hauppauge, N.Y.: Nova Science Publishers, 2012.
Lua MLA (9ú heag.)
ebrary, Inc, et al. Anal Fissure: Symptoms, Diagnosis and Treatment. Nova Science Publishers, 2012.
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