APA (7th ed.) Citation

Routh, C. R. N. (1964). Who's who in history. Blackwell.

Chicago Style (17th ed.) Citation

Routh, C. R. N. Who's Who in History. Blackwell, 1964.

MLA (9th ed.) Citation

Routh, C. R. N. Who's Who in History. Blackwell, 1964.

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