Cita APA (7th ed.)

Whitman, W. (1973). Leaves of grass: Aulhoritative texts. Norton.

Cita Chicago (17th ed.)

Whitman, Walt. Leaves of Grass: Aulhoritative Texts. London: Norton, 1973.

Cita MLA (9th ed.)

Whitman, Walt. Leaves of Grass: Aulhoritative Texts. Norton, 1973.