Não informado. (1978). Farmer cooperatives. Department of Agriculture, Agricultural Cooperative Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Farmer Cooperatives. Washington: Department of Agriculture, Agricultural Cooperative Service, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Farmer Cooperatives. Department of Agriculture, Agricultural Cooperative Service, 1978.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.