Dyfyniad APA

Beer, F., & Johnston Russell E. (1992). Mechanics of materials (2nd rev.ed. in SI units.). Mc Graw- Hill.

Dyfyniad Arddull Chicago

Beer, Ferdinand, and Johnston Russell E. Mechanics of Materials. 2nd rev.ed. in SI units. London: Mc Graw- Hill, 1992.

Dyfyniad MLA

Beer, Ferdinand, and Johnston Russell E. Mechanics of Materials. 2nd rev.ed. in SI units. Mc Graw- Hill, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.