Cita APA

Ralph, P. L. (1963). Study guide for burns western civilization (6a. ed.). New York: Norton.

Citación estilo Chicago

Ralph, Philip L. Study Guide for Burns Western Civilization. 6a. ed. New York: Norton, 1963.

Cita MLA

Ralph, Philip L. Study Guide for Burns Western Civilization. 6a. ed. New York: Norton, 1963.