Cita APA (7a ed.)

Bacon, P., & Fairweather, D. C. (1984). World regions. Allyn and Bacon.

Cita Chicago Style (17a ed.)

Bacon, Phillip, y Donald C. Fairweather. World Regions. Boston [u.a.]: Allyn and Bacon, 1984.

Cita MLA (9a ed.)

Bacon, Phillip, y Donald C. Fairweather. World Regions. Allyn and Bacon, 1984.