APA (7th ed.) Citation

(1920). Who's Who 1920: An annual Biographical Dictionary with which is incorporated "Men and Women of the Time" (72nd ed.). A. & C. Black.

Chicago Style (17th ed.) Citation

Who's Who 1920: An Annual Biographical Dictionary with Which Is Incorporated "Men and Women of the Time". 72nd ed. London: A. & C. Black, 1920.

MLA (9th ed.) Citation

Who's Who 1920: An Annual Biographical Dictionary with Which Is Incorporated "Men and Women of the Time". 72nd ed. A. & C. Black, 1920.