Cita APA

Birdsall, S. S., & Florin, J. (1992). Outline of American geography. USA: J. Wiley.

Chicago Style Citation

Birdsall, Stephen S., i John Florin. Outline of American Geography. USA: J. Wiley, 1992.

Cita MLA

Birdsall, Stephen S., i John Florin. Outline of American Geography. USA: J. Wiley, 1992.