Grant, E. L., & Ireson, W. G. (1960). Principles of engineering economy (4th ed.). New York: Ronald Press.
Παραπομπή Chicago StyleGrant, Eugene L., and William G. Ireson. Principles of Engineering Economy. 4th ed. New York: Ronald Press, 1960.
Παραπομπή MLAGrant, Eugene L., and William G. Ireson. Principles of Engineering Economy. 4th ed. New York: Ronald Press, 1960.
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