APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：这些引文格式不一定是100％准确.