Hamrock, B. J., Jacobson, B. O., & Schmid, S. R. (1999). Fundamentals of machine elements. Boston: WCB/McGraw-Hill.
Dyfyniad Arddull ChicagoHamrock, Bernard J., Bo O. Jacobson, và Steven R. Schmid. Fundamentals of Machine Elements. Boston: WCB/McGraw-Hill, 1999.
Dyfyniad MLAHamrock, Bernard J., Bo O. Jacobson, và Steven R. Schmid. Fundamentals of Machine Elements. Boston: WCB/McGraw-Hill, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.