APA Citatie

De Blij, H. J., & Muller, P. O. (2003). Concepts and regions in geography. New York: J. Wiley.

Chicago Style citaat

De Blij, Harm J., en Peter O. Muller. Concepts and Regions in Geography. New York: J. Wiley, 2003.

MLA citatie

De Blij, Harm J., en Peter O. Muller. Concepts and Regions in Geography. New York: J. Wiley, 2003.