Cita APA (7th ed.)

Academy of American Poets & Warren, R. P. (1984). Fifty years of American poetry: Anniversary volume for the Academy of American Poets. Laurel.

Cita Chicago (17th ed.)

Academy of American Poets i Robert Penn Warren. Fifty Years of American Poetry: Anniversary Volume for the Academy of American Poets. New York: Laurel, 1984.

Cita MLA (9th ed.)

Academy of American Poets i Robert Penn Warren. Fifty Years of American Poetry: Anniversary Volume for the Academy of American Poets. Laurel, 1984.