Spotts, M. F. (2004). Design of machine elements. New Jersey: Pearson Prentice Hall.
Dyfyniad Arddull ChicagoSpotts, M. F. Design of Machine Elements. New Jersey: Pearson Prentice Hall, 2004.
Dyfyniad MLASpotts, M. F. Design of Machine Elements. New Jersey: Pearson Prentice Hall, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.