Dyfyniad APA

Beer, F. P., & Johnston, E. R. (1992). Mechanics of Materials. Singapore: McGraw-Hill.

Dyfyniad Arddull Chicago

Beer, Ferdinand P., và E. Russell Johnston. Mechanics of Materials. Singapore: McGraw-Hill, 1992.

Dyfyniad MLA

Beer, 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.