APA (7th ed.) Citation

Camp, L. S. D., & Camp, C. C. D. (1964). Ancient ruins and archaeology. Doubleday.

Chicago Style (17th ed.) Citation

Camp, L. Sprague De, and Catherine C. De Camp. Ancient Ruins and Archaeology. New York: Doubleday, 1964.

MLA (9th ed.) Citation

Camp, L. Sprague De, and Catherine C. De Camp. Ancient Ruins and Archaeology. Doubleday, 1964.