Cita APA (7th ed.)

Rexroth, K. (1973). American poetry in the twentieth century. Seaburry Press.

Cita Chicago (17th ed.)

Rexroth, Kenneth. American Poetry in the Twentieth Century. New York: Seaburry Press, 1973.

Cita MLA (9th ed.)

Rexroth, Kenneth. American Poetry in the Twentieth Century. Seaburry Press, 1973.