Tilbury, D., & Tilbury, D. (2004). Engaging people in sustainability. IUCN Commission on Education and Communication.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTilbury, Daniella, और Daniella;Wortman Tilbury. Engaging People in Sustainability. IUCN Commission on Education and Communication, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTilbury, Daniella, और Daniella;Wortman Tilbury. Engaging People in Sustainability. IUCN Commission on Education and Communication, 2004.
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