Cita APA

De Blij, H. J., Muller, P. O., & WinklerPrins, A. M. G. A. (2009). The world today: Concepts and regions in geography (4th ed.). John Wiley & Sons.

Citación estilo Chicago

De Blij, Harm J., Peter O. Muller, and Antoinette M. G. A. WinklerPrins. The World Today: Concepts and Regions in Geography. 4th ed. Hoboken, NJ: John Wiley & Sons, 2009.

Cita MLA

De Blij, Harm J., et al. The World Today: Concepts and Regions in Geography. 4th ed. John Wiley & Sons, 2009.