Timoshenko, S., & Yong, D. H. (1983). Engineering mechanics (Ed.4.). Mc Graw - Hill.
Dyfyniad Arddull ChicagoTimoshenko, S., and D H. Yong. Engineering Mechanics. Ed.4. New Delhi: Mc Graw - Hill, 1983.
Dyfyniad MLATimoshenko, S., and D H. Yong. Engineering Mechanics. Ed.4. Mc Graw - Hill, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.