Unwin, T. (1992). The place of geography. Longman Scientific & Technical ; Wiley.
Lua i Stíl Chicago (17ú heag.)Unwin, Tim. The Place of Geography. Harlow, Essex, England : New York: Longman Scientific & Technical ; Wiley, 1992.
Lua MLA (9ú heag.)Unwin, Tim. The Place of Geography. Longman Scientific & Technical ; Wiley, 1992.
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