Citazione APA

Cunliffe, M. (1986). The literature of the United States (4th ed.). Penguin Books.

Stile di citazione Chicago

Cunliffe, Marcus. The Literature of the United States. 4th ed. New York, N.Y., U.S.A.: Penguin Books, 1986.

Citazione MLA

Cunliffe, Marcus. The Literature of the United States. 4th ed. Penguin Books, 1986.