Cita APA (7a ed.)

Simpson, E. S. (1987). The developing world: An introduction. Longman.

Cita Chicago Style (17a ed.)

Simpson, E. S. The Developing World: An Introduction. New York: Longman, 1987.

Cita MLA (9a ed.)

Simpson, E. S. The Developing World: An Introduction. Longman, 1987.