Corrigan, R. E., Kaufman, R. A., & Bauer, H. A. (1966). Why system engineering. Fearon Publishers.
Dyfyniad Arddull ChicagoCorrigan, Robert E., Roger A. Kaufman, and Harold A. Bauer. Why System Engineering. Palo Alto, Calif.: Fearon Publishers, 1966.
Dyfyniad MLACorrigan, Robert E., et al. Why System Engineering. Fearon Publishers, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.