APA (7th ed.) Citation

Cather, W. (1940). Sapphira and the slave girl (1. ed.). Knopf.

Chicago Style (17th ed.) Citation

Cather, Willa. Sapphira and the Slave Girl. 1. ed. New York: Knopf, 1940.

MLA (9th ed.) Citation

Cather, Willa. Sapphira and the Slave Girl. 1. ed. Knopf, 1940.