Cita APA (7a ed.)

Baerwald, T. J., & Fraser, C. (1998). World geography: Building a global perspective. Prentice Hall.

Cita Chicago Style (17a ed.)

Baerwald, Thomas J., y Celeste Fraser. World Geography: Building a Global Perspective. Needham, Mass: Prentice Hall, 1998.

Cita MLA (9a ed.)

Baerwald, Thomas J., y Celeste Fraser. World Geography: Building a Global Perspective. Prentice Hall, 1998.