Não informado. (1969). Engineering Education. American Society for Engineering Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Engineering Education. Washington: American Society for Engineering Education, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Engineering Education. American Society for Engineering Education, 1969.
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