Citazione Stile APA (7a Edizione)

Demko, G. J., Agel, J., & Boe, E. (1992). Why in the world: Adventures in geography. Anchor Books.

Citazione stile Chigago Style (17a edizione)

Demko, George J., Jerome Agel, e Eugene Boe. Why in the World: Adventures in Geography. New York: Anchor Books, 1992.

Citatione MLA (9a ed.)

Demko, George J., et al. Why in the World: Adventures in Geography. Anchor Books, 1992.