Lua APA (7ú heag.)
De Blij, H. J., & Muller, P. O. (1997). Geography: Realms, regions, and concepts (8th ed.). J. Wiley.
Lua i Stíl Chicago (17ú heag.)
De Blij, Harm J., agus Peter O. Muller. Geography: Realms, Regions, and Concepts. 8th ed. New York: J. Wiley, 1997.
Lua MLA (9ú heag.)
De Blij, Harm J., agus Peter O. Muller. Geography: Realms, Regions, and Concepts. 8th ed. J. Wiley, 1997.
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