De Lee, J. B., & Greenhill, J. P. (1955). Obstetrics. Saunders.
Lua i Stíl Chicago (17ú heag.)De Lee, Jospeh Bolivar, agus Jacob Pearl Greenhill. Obstetrics. Philadelphia: Saunders, 1955.
Lua MLA (9ú heag.)De Lee, Jospeh Bolivar, agus Jacob Pearl Greenhill. Obstetrics. Saunders, 1955.
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