Cita APA (7a ed.)

Stansfield , C. A., & Zimolzak, C. E. (1982). World regions: Changing interaction s. Charles E. Merrill.

Cita Chicago Style (17a ed.)

Stansfield , Charles A., y Chester E. Zimolzak. World Regions: Changing Interaction S. Columbus Ohio: Charles E. Merrill, 1982.

Cita MLA (9a ed.)

Stansfield , Charles A., y Chester E. Zimolzak. World Regions: Changing Interaction S. Charles E. Merrill, 1982.