Birg, H., Fritsch, B., & Hösle, V. (1995). Population, Environment and Sustainable Livelihood: Proceedings of Symposion V, Session 2 of the World Congress of Sociology, held at the University of Bielefeld, July 18-23, 1994.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBirg, Herwig, Bruno Fritsch, और Vittorio Hösle. Population, Environment and Sustainable Livelihood: Proceedings of Symposion V, Session 2 of the World Congress of Sociology, Held at the University of Bielefeld, July 18-23, 1994. Bielefeld, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBirg, Herwig, et al. Population, Environment and Sustainable Livelihood: Proceedings of Symposion V, Session 2 of the World Congress of Sociology, Held at the University of Bielefeld, July 18-23, 1994. 1995.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.