APA (7th ed.) Citation

Cooley, C. E., & Doubleday, N. (1961). Encyclopedia of world travel. Doubleday & Company.

Chicago Style (17th ed.) Citation

Cooley, C. Earl, and Nelson Doubleday. Encyclopedia of World Travel. New York: Doubleday & Company, 1961.

MLA (8th ed.) Citation

Cooley, C. Earl, and Nelson Doubleday. Encyclopedia of World Travel. Doubleday & Company, 1961.

Warning: These citations may not always be 100% accurate.