APA (7th ed.) Citation

Schumann, E. A. (1931). Extra-uterine pregnancy. Appleton.

Chicago Style (17th ed.) Citation

Schumann, Edward Armin. Extra-uterine Pregnancy. New York: Appleton, 1931.

MLA (8th ed.) Citation

Schumann, Edward Armin. Extra-uterine Pregnancy. Appleton, 1931.