APA (7th ed.) Citation

American Biographical Institute. (1999). International who's who of twentieth century achievement (1998-1999 ed.). American Biographical Institute.

Chicago Style (17th ed.) Citation

American Biographical Institute. International Who's Who of Twentieth Century Achievement. 1998-1999 ed. Raleigh, N.C: American Biographical Institute, 1999.

MLA (9th ed.) Citation

American Biographical Institute. International Who's Who of Twentieth Century Achievement. 1998-1999 ed. American Biographical Institute, 1999.