Citazione Stile APA (7a Edizione)

Whitman, W. (1959). Leaves of grass (First edition.). Penguin.

Citazione stile Chigago Style (17a edizione)

Whitman, Walt. Leaves of Grass. First edition. New York: Penguin, 1959.

Citatione MLA (9a ed.)

Whitman, Walt. Leaves of Grass. First edition. Penguin, 1959.