Dyfyniad APA
Beer, F. P., & Johnston, E. R. (2002). Mechanics of materials (3rd ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Beer, Ferdinand P., and E. Russell/Dewolf Johnston. Mechanics of Materials. 3rd ed. New Delhi: McGraw-Hill, 2002.
Dyfyniad MLA
Beer, Ferdinand P., and E. Russell/Dewolf Johnston. Mechanics of Materials. 3rd ed. McGraw-Hill, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.