Dyfyniad APA

Schumann, E. A. (1921). Extra-uterine pregnancy. D. Appleton and company.

Dyfyniad Arddull Chicago

Schumann, Edward Armin. Extra-uterine Pregnancy. New York, London: D. Appleton and company, 1921.

Dyfyniad MLA

Schumann, Edward Armin. Extra-uterine Pregnancy. D. Appleton and company, 1921.

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