Roberts, A. D., & Lapidge, s. C. (1977). Manufacturing processes. Mc Graw - Hill.
Dyfyniad Arddull ChicagoRoberts, Arthur D., and samuel C. Lapidge. Manufacturing Processes. New Delhi: Mc Graw - Hill, 1977.
Dyfyniad MLARoberts, Arthur D., and samuel C. Lapidge. Manufacturing Processes. Mc Graw - Hill, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.