APA (7th ed.) Citation

Halperin, S. W. (1961). Some 20th-century historians: Essays on eminent Europeans. University of Chicago Press.

Chicago Style (17th ed.) Citation

Halperin, Samuel William. Some 20th-century Historians: Essays on Eminent Europeans. Chicago: University of Chicago Press, 1961.

MLA (9th ed.) Citation

Halperin, Samuel William. Some 20th-century Historians: Essays on Eminent Europeans. University of Chicago Press, 1961.