APA (7th ed.) Citation

Brooks, C., & Warren, R. P. (1960). Understanding poetry. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Brooks, Cleanth, and Robert Penn Warren. Understanding Poetry. New York: Holt, Rinehart and Winston, 1960.

MLA (9th ed.) Citation

Brooks, Cleanth, and Robert Penn Warren. Understanding Poetry. Holt, Rinehart and Winston, 1960.