APA (7th ed.) Citation

Booth, J. A., & Walker, T. W. (1989). Understanding Central America. Westview Press.

Chicago Style (17th ed.) Citation

Booth, John A., and Thomas W. Walker. Understanding Central America. Boulder, Colo: Westview Press, 1989.

MLA (9th ed.) Citation

Booth, John A., and Thomas W. Walker. Understanding Central America. Westview Press, 1989.