Pennick, J. E., & Stiles, J. R. (1990). Sustainable development for a new world agenda: Proceedings of a conference, Winnipeg, Manitoba, Canada, October 17-20, 1990. The World Environment Energy and Economic Conference.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPennick, John E., और John R. Stiles. Sustainable Development for a New World Agenda: Proceedings of a Conference, Winnipeg, Manitoba, Canada, October 17-20, 1990. [Manitoba, Canada: The World Environment Energy and Economic Conference, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPennick, John E., और John R. Stiles. Sustainable Development for a New World Agenda: Proceedings of a Conference, Winnipeg, Manitoba, Canada, October 17-20, 1990. The World Environment Energy and Economic Conference, 1990.
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