1. Johnson, E.
, 1950, “Some Experiments on Tapping,” Proc. Inst. Mech. Eng., 162, p. 412412.
2. Cao, T., Batzer, S. A., and Sutherland, J. W., 1997, “Experimental Investigation of Tapped Thread Surface Roughness for Cast Aluminum Alloys,” ASME J. Manuf. Sci. Eng., 1, pp. 189–195.
3. National Twist Drill and Tool Company, 1964, The Torque and Thrust in Tapping, January.
4. Dogra, A. S., 1999, “Mechanistic Model for Tapping Process with Emphasis on Process Faults and Hole Geometry,” Master’s thesis, University of Illinois at Urbana-Champaign.
5. Johnson, K. L., 1987, Contact Mechanics, Cambridge University Press, first paperback ed.