Cita APA (7a ed.)
Perkins, G. B. (1990). The American tradition in literature (7th ed.). McGraw-Hill.
Cita Chicago Style (17a ed.)
Perkins, George B. The American Tradition in Literature. 7th ed. New York: McGraw-Hill, 1990.
Cita MLA (9a ed.)
Perkins, George B. The American Tradition in Literature. 7th ed. McGraw-Hill, 1990.
Precaución: Estas citas no son 100% exactas.