United States Government Printing. Marketing U.S. agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States Government Printing. Marketing U.S. Agriculture.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited States Government Printing. Marketing U.S. Agriculture.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.