APA (7th ed.) Zitazioa
Tim Marshall. (2015). Prisoners of Geography. HarperOne.
Chicago Style (17th ed.) Zitazioa
Tim Marshall. Prisoners of Geography. London: HarperOne, 2015.
MLA (9th ed.) Zitazioa
Tim Marshall. Prisoners of Geography. HarperOne, 2015.
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