APA (7th ed.) Citation

De Blij, H. J., Muller, P. O., & Nijman, J. (2013). The world today: Concepts and regions in geography (6th ed.). Wiley.

Chicago Style (17th ed.) Citation

De Blij, Harm J., Peter O. Muller, and Jan Nijman. The World Today: Concepts and Regions in Geography. 6th ed. Hoboken, N.J.: Wiley, 2013.

MLA (9th ed.) Citation

De Blij, Harm J., et al. The World Today: Concepts and Regions in Geography. 6th ed. Wiley, 2013.