DeGarmo, E. P., Sullivan, W. G., and Canada, J. R. (1984), Engineering Economy, 7th Edition, New York: Macmillan.
Muksian, R. (1984), Financial Mathematics Handbook, Englewood Cliffs, NJ: Prentice-Hall.
Newnan, D. G. (1988), Engineering Economic Analysis, 3rd Edition, San Jose, CA: Engineering Press.
Riggs, J. L. and West, T. M. (1986), Essentials of Engineering Economics, 2nd Edition, New York: McGraw-Hill.