Cita APA

Perkins , G., & Perkins, B. (1999). The American tradition in literature (9th ed.). McGraw- Hill.

Citación estilo Chicago

Perkins , George, and Barbara Perkins. The American Tradition in Literature. 9th ed. Boston: McGraw- Hill, 1999.

Cita MLA

Perkins , George, and Barbara Perkins. The American Tradition in Literature. 9th ed. McGraw- Hill, 1999.