Cita APA (7a ed.)

Baerwald, T. J., & Fraser, C. (2004). World geography: Building a global perspective. Pearson.

Cita Chicago Style (17a ed.)

Baerwald, Thomas J., y Celeste Fraser. World Geography: Building a Global Perspective. Upper Saddle River, NJ: Pearson, 2004.

Cita MLA (9a ed.)

Baerwald, Thomas J., y Celeste Fraser. World Geography: Building a Global Perspective. Pearson, 2004.