APA (7 वां संस्करण) प्रशस्ति पत्र
Harrison, P. (1992). The third revolution: Environment, population, and a sustainable world. Penguin books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Harrison, Paul. The Third Revolution: Environment, Population, and a Sustainable World. London: Penguin books, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Harrison, Paul. The Third Revolution: Environment, Population, and a Sustainable World. Penguin books, 1992.
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