Não informado. (2001). Resources, Conservation and Recycling. Editions Elsevier.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Resources, Conservation and Recycling. Amsterdam: Editions Elsevier, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Resources, Conservation and Recycling. Editions Elsevier, 2001.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.