Cita APA (7th ed.)

Case, E. C., & Bergsmark, D. R. (1932). College geography. J. Wiley and Sons.

Cita Chicago (17th ed.)

Case, Earl Clark, i Daniel R. Bergsmark. College Geography. New York: J. Wiley and Sons, 1932.

Cita MLA (9th ed.)

Case, Earl Clark, i Daniel R. Bergsmark. College Geography. J. Wiley and Sons, 1932.