Cita APA
de Blij, H. J., & Birdsall, S. S. (1978). Geography: Regions and concepts (2nd ed.). John Wiley.
Citación estilo Chicago
de Blij, Harm J., and Stephen S. Birdsall. Geography: Regions and Concepts. 2nd ed. New York: John Wiley, 1978.
Cita MLA
de Blij, Harm J., and Stephen S. Birdsall. Geography: Regions and Concepts. 2nd ed. John Wiley, 1978.
Warning: These citations may not always be 100% accurate.