APA (7th ed.) Citation

Ross Williamson, H. (1957). Enigmas of history. MacMillan.

Chicago Style (17th ed.) Citation

Ross Williamson, Hugh. Enigmas of History. New York: MacMillan, 1957.

MLA (9th ed.) Citation

Ross Williamson, Hugh. Enigmas of History. MacMillan, 1957.

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