Citazione Stile APA (7a Edizione)

Trewartha, . G. T., Robinson, A. H., & Hammond, E. H. (1967). Elements of Geography (5th ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Trewartha, Glenn T., Arthur H. Robinson, e Edwin H. Hammond. Elements of Geography. 5th ed. New York: McGraw-Hill, 1967.

Citatione MLA (9a ed.)

Trewartha, Glenn T., et al. Elements of Geography. 5th ed. McGraw-Hill, 1967.