APA (7th ed.) Citation

American Council of Learned Societies, Johnson, A., Malone, D., & Starr, H. E. (1928). Dictionary of American biography. C. Scribner's sons.

Chicago Style (17th ed.) Citation

American Council of Learned Societies, Allen Johnson, Dumas Malone, and Harrie Elwood Starr. Dictionary of American Biography. New York: C. Scribner's sons, 1928.

MLA (9th ed.) Citation

American Council of Learned Societies, et al. Dictionary of American Biography. C. Scribner's sons, 1928.