APA (7th ed.) Citation

Whitman, W., & Cowley, M. (1986). Walt Whitman's leaves of grass (1st (1855) ed.). Penguin.

Chicago Style (17th ed.) Citation

Whitman, Walt, and Malcolm Cowley. Walt Whitman's Leaves of Grass. 1st (1855) ed. New York: Penguin, 1986.

MLA (9th ed.) Citation

Whitman, Walt, and Malcolm Cowley. Walt Whitman's Leaves of Grass. 1st (1855) ed. Penguin, 1986.