Tortell, P. (2020). Earth 2020: An Insider's Guide to a Rapidly Changing Planet. Open Book Publishers.
Chicago Style (17. basım) AtıfTortell, Philippe. Earth 2020: An Insider's Guide to a Rapidly Changing Planet. Open Book Publishers, 2020.
MLA (9th ed.) AtıfTortell, Philippe. Earth 2020: An Insider's Guide to a Rapidly Changing Planet. Open Book Publishers, 2020.
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