Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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