APA (7th ed.) Citation

Brown, J. H. ., & Johnson, R.. (1968). The twentieth century biographical dictionary of notable Americans. Gale Research Co..

Chicago Style (17th ed.) Citation

Brown, John Howard , and Rossiter Johnson. The Twentieth Century Biographical Dictionary of Notable Americans. Detroit: Gale Research Co., 1968.

MLA (9th ed.) Citation

Brown, John Howard , and Rossiter Johnson. The Twentieth Century Biographical Dictionary of Notable Americans. Gale Research Co., 1968.