Grant, E. L., Ireson, W. L., & Leavenworth, R. S. (1976). Principles of engineering economy (6. ed., 2. print.). Ronald Pr. Co.
Chicago Style (17th ed.) CitationGrant, Eugene L., William L. Ireson, and Richard S. Leavenworth. Principles of Engineering Economy. 6. ed., 2. print. New York: Ronald Pr. Co, 1976.
MLA (9th ed.) CitationGrant, Eugene L., et al. Principles of Engineering Economy. 6. ed., 2. print. Ronald Pr. Co, 1976.
Warning: These citations may not always be 100% accurate.