APA (7th ed.) Citation

Demko, G. J., Agel, J., & Boe, E. (1992). Why in the world: Adventures in geography (1st Anchor Books ed.). Anchor Books.

Chicago Style (17th ed.) Citation

Demko, George J., Jerome Agel, and Eugene Boe. Why in the World: Adventures in Geography. 1st Anchor Books ed. New York: Anchor Books, 1992.

MLA (9th ed.) Citation

Demko, George J., et al. Why in the World: Adventures in Geography. 1st Anchor Books ed. Anchor Books, 1992.