Allaby, M. (1971). Eco-activists: Young fights for a human environment. Charles Knight.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAllaby, Michael. Eco-activists: Young Fights for a Human Environment. Charles Knight, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAllaby, Michael. Eco-activists: Young Fights for a Human Environment. Charles Knight, 1971.
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