Fossel, P. V. (2014). Organic farming: How to raise, certify, and market organic crops and livestock. Voyageur Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFossel, Peter V. Organic Farming: How to Raise, Certify, and Market Organic Crops and Livestock. Minneapolis, Minnesota: Voyageur Press, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFossel, Peter V. Organic Farming: How to Raise, Certify, and Market Organic Crops and Livestock. Voyageur Press, 2014.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.