Cita APA (7th ed.)

Case, E. C., & Bergsmark, D. R. (1949). College geography (3rd ed. rev.). J. Wiley.

Cita Chicago (17th ed.)

Case, Earl Clark, i Daniel Rockman Bergsmark. College Geography. 3rd ed. rev. New York: J. Wiley, 1949.

Cita MLA (9th ed.)

Case, Earl Clark, i Daniel Rockman Bergsmark. College Geography. 3rd ed. rev. J. Wiley, 1949.