APA (7th ed.) Citation

Butterfield, H. (1960). International conflict in the twentieth century: A christian view. Harper & Brothers.

Chicago Style (17th ed.) Citation

Butterfield, Herbert. International Conflict in the Twentieth Century: A Christian View. New York: Harper & Brothers, 1960.

MLA (9th ed.) Citation

Butterfield, Herbert. International Conflict in the Twentieth Century: A Christian View. Harper & Brothers, 1960.

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