Dyfyniad APA

Hirst, B. C. (1912). A text-book of obstetrics (7th ed., rev. and enl.). W.B. Saunders Company.

Dyfyniad Arddull Chicago

Hirst, Barton Cooke. A Text-book of Obstetrics. 7th ed., rev. and enl. Philadelphia: W.B. Saunders Company, 1912.

Dyfyniad MLA

Hirst, Barton Cooke. A Text-book of Obstetrics. 7th ed., rev. and enl. W.B. Saunders Company, 1912.

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