APA (7 वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Charter, M., & Tischner, U. (2001). Sustainable solutions: Developing products and services for the future. Greenleaf Pub..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Martin Charter, और Ursula Tischner. Sustainable Solutions: Developing Products and Services for the Future. Sheffield, U.K.: Greenleaf Pub., 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, et al. Sustainable Solutions: Developing Products and Services for the Future. Greenleaf Pub., 2001.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.