APA (7th ed.) Citation

O'Brien, S., McGuire, P., McPherson, J. M., & Gerstle, G. (1991). American political leaders: From colonial times to the present. ABC-CLIO.

Chicago Style (17th ed.) Citation

O'Brien, Steven, Paula McGuire, James M. McPherson, and Gary Gerstle. American Political Leaders: From Colonial Times to the Present. Santa Barbara, Calif.: ABC-CLIO, 1991.

MLA (8th ed.) Citation

O'Brien, Steven, et al. American Political Leaders: From Colonial Times to the Present. ABC-CLIO, 1991.