Hertsgaard, M. (1998). Earth odyssey: Around the world in search of our environmental future. Broadway Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHertsgaard, Mark. Earth Odyssey: Around the World in Search of Our Environmental Future. New York: Broadway Books, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHertsgaard, Mark. Earth Odyssey: Around the World in Search of Our Environmental Future. Broadway Books, 1998.
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