Bridgwater, W., & Kurtz, S. (1963). The Columbia enciclopedia (3a ed.). Columbia University.
Chicago Style (17th ed.) CitationBridgwater, William, and Seymour Kurtz. The Columbia Enciclopedia. 3a ed. New York ; London: Columbia University, 1963.
MLA (9th ed.) CitationBridgwater, William, and Seymour Kurtz. The Columbia Enciclopedia. 3a ed. Columbia University, 1963.