Não informado. (2007). Report of the Division of the Agriculture. Iowa State College, Division of the Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Report of the Division of the Agriculture. Ames, Iowa: Iowa State College, Division of the Agriculture, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Report of the Division of the Agriculture. Iowa State College, Division of the Agriculture, 2007.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.