Não informado. (2003). Seed technology. Association of Official Seed Analysts.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Seed Technology. Lincoln, Neb: Association of Official Seed Analysts, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Seed Technology. Association of Official Seed Analysts, 2003.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.