Dyfyniad APA
Beer, F. P. (2009). Mechanics of materials (5th ed.). MacGraw-Hill.
Dyfyniad Arddull Chicago
Beer, Ferdinand P. Mechanics of Materials. 5th ed. New York: MacGraw-Hill, 2009.
Dyfyniad MLA
Beer, Ferdinand P. Mechanics of Materials. 5th ed. MacGraw-Hill, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.