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.
Citace podle Chicago (17th ed.)De Blij, Harmon J., a Peter O. Muller. Study Guide to Accompany Physical Geography of the Global Environment, Second Edition. 2nd ed. New York: John Wiley & Sons, 1996.
Citace podle MLA (9th ed.)De Blij, Harmon J., a Peter O. Muller. Study Guide to Accompany Physical Geography of the Global Environment, Second Edition. 2nd ed. John Wiley & Sons, 1996.
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