ebrary, Inc. (1999). Our common journey: A transition toward sustainability. National Academy Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc. Our Common Journey: A Transition Toward Sustainability. Washington, D.C.: National Academy Press, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc. Our Common Journey: A Transition Toward Sustainability. National Academy Press, 1999.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.