APA (7 वां संस्करण) प्रशस्ति पत्र

Não informado. (1959). Russian Engineering Journal. Production Engineering Research Association.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Não informado. Russian Engineering Journal. Melton Mowbray, Inglaterra: Production Engineering Research Association, 1959.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Não informado. Russian Engineering Journal. Production Engineering Research Association, 1959.

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