Cita APA (7a ed.)

Warren, R. P. (1978). Now and then: Poems 1976-1978. Random House.

Cita Chicago Style (17a ed.)

Warren, Robert Penn. Now and Then: Poems 1976-1978. New York: Random House, 1978.

Cita MLA (9a ed.)

Warren, Robert Penn. Now and Then: Poems 1976-1978. Random House, 1978.