APA (7th ed.) Citation

Warren, R. P. (1966). Selected poems: New and old, 1923-1966. Random House.

Chicago Style (17th ed.) Citation

Warren, Robert Penn. Selected Poems: New and Old, 1923-1966. New York: Random House, 1966.

MLA (9th ed.) Citation

Warren, Robert Penn. Selected Poems: New and Old, 1923-1966. Random House, 1966.