APA
Williams J. W., Pritchard J. A. & Macdonald P. C. (19800000). Obstetrics. New York, us: Appleton-Century-Crofts.
Chicago
Williams John Whitridge, Pritchard Jack A and Macdonald Paul C. 19800000. Obstetrics. New York, us: Appleton-Century-Crofts.
Harvard
Williams J. W., Pritchard J. A. and Macdonald P. C. (19800000). Obstetrics. New York, us: Appleton-Century-Crofts.
MLA
Williams John Whitridge, Pritchard Jack A and Macdonald Paul C. Obstetrics. New York, us: Appleton-Century-Crofts. 19800000.
TextLanguage: English Publication details: Appleton-Century-Crofts 19800000 New York, usEdition: 16ª. edDescription: 1179ISBN: 
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