APA (7 वां संस्करण) प्रशस्ति पत्र

Não informado. (1954). Agricultural Engineers Yearbook. American Society of Agricultural Engineers.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Não informado. Agricultural Engineers Yearbook. St. Joseph, Mich: American Society of Agricultural Engineers, 1954.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Não informado. Agricultural Engineers Yearbook. American Society of Agricultural Engineers, 1954.

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