Não informado. (1984). Asae Standards. American Society of Agricultural Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Asae Standards. St. Joseph, Mich: American Society of Agricultural Engineers, 1984.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Asae Standards. American Society of Agricultural Engineers, 1984.
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