Lua APA (7ú heag.)
ebrary, Inc, & Gregory, D. (2009). The dictionary of human geography (5th ed.). Blackwell.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Derek Gregory. The Dictionary of Human Geography. 5th ed. Malden, MA: Blackwell, 2009.
Lua MLA (9ú heag.)
ebrary, Inc, agus Derek Gregory. The Dictionary of Human Geography. 5th ed. Blackwell, 2009.
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