Becker, E., & Becker, E. (1999). Sustainability and the social sciences: A cross-disciplinary approach to integra. Zed Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBecker, Egon, और Egon;Jahn Becker. Sustainability and the Social Sciences: A Cross-disciplinary Approach to Integra. Zed Books, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBecker, Egon, और Egon;Jahn Becker. Sustainability and the Social Sciences: A Cross-disciplinary Approach to Integra. Zed Books, 1999.
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