Sage, A. P. (1977). Systems engineering: Methodology and applications. Institute of Electrical and Electronics Engineers.
استشهاد بنمط شيكاغوSage, Andrew P. Systems Engineering: Methodology and Applications. New York: Institute of Electrical and Electronics Engineers, 1977.
MLA استشهادSage, Andrew P. Systems Engineering: Methodology and Applications. Institute of Electrical and Electronics Engineers, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.