De Blij, H. J. (1995). The earth: An introduction to its physical and human geography (4th ed.). Wiley.
Citace podle Chicago (17th ed.)De Blij, Harm J. The Earth: An Introduction to Its Physical and Human Geography. 4th ed. New York: Wiley, 1995.
Citace podle MLA (8th ed.)De Blij, Harm J. The Earth: An Introduction to Its Physical and Human Geography. 4th ed. Wiley, 1995.
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