APA (7th ed.) Citation

Keller, J. E. (1972). Gonzalo de Berceo. Twayne Publishers.

Chicago Style (17th ed.) Citation

Keller, John Esten. Gonzalo De Berceo. New York: Twayne Publishers, 1972.

MLA (8th ed.) Citation

Keller, John Esten. Gonzalo De Berceo. Twayne Publishers, 1972.

Warning: These citations may not always be 100% accurate.