Lua APA (7ú heag.)
De Blij, H. J., & Muller, P. O. (2006). Geography: Realms, regions, and concepts (12th ed.). John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)
De Blij, Harm J., agus Peter O. Muller. Geography: Realms, Regions, and Concepts. 12th ed. Hoboken, NJ: John Wiley & Sons, 2006.
Lua MLA (9ú heag.)
De Blij, Harm J., agus Peter O. Muller. Geography: Realms, Regions, and Concepts. 12th ed. John Wiley & Sons, 2006.
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