Bacon, H. E. (1949). Anus, rectum, sigmoid colon: Diagnosis and treatment (3d ed.). J.B. Lippincott Co.
Lua i Stíl Chicago (17ú heag.)Bacon, Harry E. Anus, Rectum, Sigmoid Colon: Diagnosis and Treatment. 3d ed. Philadelphia: J.B. Lippincott Co, 1949.
Lua MLA (8ú heag.)Bacon, Harry E. Anus, Rectum, Sigmoid Colon: Diagnosis and Treatment. 3d ed. J.B. Lippincott Co, 1949.
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