Citazione Stile APA (7a Edizione)

Harper, R. A., Zabawski, I., & Dival, E. V. (1982). Peoples in regions. Silver Burdett.

Citazione stile Chigago Style (17a edizione)

Harper, Robert A., Irene Zabawski, e Eileen Vardian Dival. Peoples in Regions. Morristown, NJ: Silver Burdett, 1982.

Citatione MLA (9a ed.)

Harper, Robert A., et al. Peoples in Regions. Silver Burdett, 1982.