Machinery handbook. (1979). Machinery handbook: A reference book for mechanical engineer, draftsman, toolmaker and mechanist (21st ed.). Industrial press.
Dyfyniad Arddull ChicagoMachinery handbook. Machinery Handbook: A Reference Book for Mechanical Engineer, Draftsman, Toolmaker and Mechanist. 21st ed. New York: Industrial press, 1979.
Dyfyniad MLAMachinery handbook. Machinery Handbook: A Reference Book for Mechanical Engineer, Draftsman, Toolmaker and Mechanist. 21st ed. Industrial press, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.