APA (7th ed.) Citation

Cather, W. (1989). O pioneers¡ (1a. ed.). Bantam Books.

Chicago Style (17th ed.) Citation

Cather, Willa. O Pioneers¡. 1a. ed. Toronto: Bantam Books, 1989.

MLA (9th ed.) Citation

Cather, Willa. O Pioneers¡. 1a. ed. Bantam Books, 1989.