APA (7th ed.) Citation

Leonard, J. W., & Marquis, A. N. 1. Who's who in America: A biographical dictionary of notable living men and women. A.N. Marquis.

Chicago Style (17th ed.) Citation

Leonard, John Williams, and Albert Nelson 1943 Marquis. Who's Who in America: A Biographical Dictionary of Notable Living Men and Women. Chicago: A.N. Marquis.

MLA (9th ed.) Citation

Leonard, John Williams, and Albert Nelson 1943 Marquis. Who's Who in America: A Biographical Dictionary of Notable Living Men and Women. A.N. Marquis.