Gore, A. (2001). Earth in the balance: Forging a new common purpose / Al Gore. Earthscan Pubs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGore, Al. Earth in the Balance: Forging a New Common Purpose / Al Gore. London: Earthscan Pubs, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGore, Al. Earth in the Balance: Forging a New Common Purpose / Al Gore. Earthscan Pubs, 2001.
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