| 1 | Shigley's Mechanical Engineering Design, R.G. Budynas, J.K. Nisbett (8th SI Edition). |
| 2 | Fundamentals of Machine Elements, Bernard J. Hamrock, Bo Jacobson, Steven R. Schmid, MacGraw-Hill, Inc. |
| 3 | Manufaturing Engineerig Economics and Processes, K.C. Ludema, R.M. Caddell, A.G. Atkins, Prentice-Hall, Inc. |