Dyfyniad APA
Beer ,Ferdinand P., Johnston , E. R., Dewolf , J. T., & Mazurek David F. (2012). Mechanics of materials (6th ed.). McGraw Hill Education.
Dyfyniad Arddull Chicago
Beer ,Ferdinand P., E. Russel Johnston , John T. Dewolf , and Mazurek David F. Mechanics of Materials. 6th ed. New Delhi: McGraw Hill Education, 2012.
Dyfyniad MLA
Beer ,Ferdinand P., et al. Mechanics of Materials. 6th ed. McGraw Hill Education, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.