GRANT, E. L., IRESON, W., & LEAVENWORTH, R. S. (1990). Principles of engineering economy.-- ed.8. John Wiley and Sons.
Chicago-čujuhus (17. p.)GRANT, Eugene L., W.Grant IRESON, juo Richard S. LEAVENWORTH. Principles of Engineering Economy.-- Ed.8. New York: John Wiley and Sons, 1990.
MLA-čujuhus (9. p.)GRANT, Eugene L., et al. Principles of Engineering Economy.-- Ed.8. John Wiley and Sons, 1990.
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