Cita APA (7th ed.)
Bridgwater, W., & Kurtz, S. (1963). The COLUMBIA encyclopedia (3rd ed.). Parent's Institute.
Cita Chicago (17th ed.)
Bridgwater, William, i Seymour Kurtz. The COLUMBIA Encyclopedia. 3rd ed. New York: Parent's Institute, 1963.
Cita MLA (9th ed.)
Bridgwater, William, i Seymour Kurtz. The COLUMBIA Encyclopedia. 3rd ed. Parent's Institute, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.