Beer, F. P., & Johnston, E. R. (1992). Mechanics of Materials. Singapore: McGraw-Hill.
Dyfyniad Arddull ChicagoBeer, Ferdinand P., và E. Russell Johnston. Mechanics of Materials. Singapore: McGraw-Hill, 1992.
Dyfyniad MLABeer, Ferdinand P., và E. Russell Johnston. Mechanics of Materials. Singapore: McGraw-Hill, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.