Cita APA (7a ed.)

Markmann, C. L., & Sherwin, M. (1961). John F. Kennedy: A sense of purpose. St. Martin's Press.

Cita Chicago Style (17a ed.)

Markmann, Charles Lam, y Mark Sherwin. John F. Kennedy: A Sense of Purpose. New York: St. Martin's Press, 1961.

Cita MLA (9a ed.)

Markmann, Charles Lam, y Mark Sherwin. John F. Kennedy: A Sense of Purpose. St. Martin's Press, 1961.