Dyfyniad APA

Titus, P., & Willson, J. R. (1961). Management of obstetric difficulties (6th ed.). Mosby.

Dyfyniad Arddull Chicago

Titus, Paul, and J. Robert Willson. Management of Obstetric Difficulties. 6th ed. St. Louis: Mosby, 1961.

Dyfyniad MLA

Titus, Paul, and J. Robert Willson. Management of Obstetric Difficulties. 6th ed. Mosby, 1961.

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