1. Creese, Robert C. and Adithan, M., Strategic Cost Analysis for Project Managers and Engineers, New Academic Science Limited, Tunbridge Wells, UK, pp. 39–48, 2012. 93, 111
2. Park, Chan S., Contemporary Engineering Economics, 2nd ed., Addison-Wesley, Menlo Park, CA, p. 803, 1997. 93
3. Newnan, Donald G., Eschenbach, Ted G., and Lavelle, Jerome P., Engineering Economic Analysis, 11th ed., Oxford University Press, New York, p. 655, 2012. 93
4. Mehta, Merwan B., Applied Engineering Economics Using Excel, Industrial Press, Inc., South Norwalk, CT, p. 260, 2016. 93
5. Whitman, David L. and Terry, Ronald E., Fundamentals of Engineering Economics and Decision Analysis, Morgan & Claypool Publishers, San Rafael, CA, p. 219, 2012. 93, 111