Sage, A. P. (1977). Systems engineering: Methodology and applications. Institute of Electrical and Electronics Engineers.
শিকাগো স্টাইলে সাইটেশনSage, Andrew P. Systems Engineering: Methodology and Applications. New York: Institute of Electrical and Electronics Engineers, 1977.
এমএলএ সাইটেশনSage, Andrew P. Systems Engineering: Methodology and Applications. Institute of Electrical and Electronics Engineers, 1977.
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