Beer, F. P., & Johnston, E. R. Vector mechanics for engineers (4th ed.).
Dyfyniad Arddull ChicagoBeer, Ferdinand P., and E. Russell Johnston. Vector Mechanics for Engineers. 4th ed.
Dyfyniad MLABeer, Ferdinand P., and E. Russell Johnston. Vector Mechanics for Engineers. 4th ed.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.