Citazione Stile APA (7a Edizione)

De Blij, H. J., & Muller, P. O. (1996). Study guide to accompany Physical geography of the global environment, second edition (2nd ed.). John Wiley & Sons.

Citazione stile Chigago Style (17a edizione)

De Blij, Harmon J., e Peter O. Muller. Study Guide to Accompany Physical Geography of the Global Environment, Second Edition. 2nd ed. New York: John Wiley & Sons, 1996.

Citatione MLA (9a ed.)

De Blij, Harmon J., e Peter O. Muller. Study Guide to Accompany Physical Geography of the Global Environment, Second Edition. 2nd ed. John Wiley & Sons, 1996.