Dyfyniad APA

Helsel, L. D., & Liu, P. P. (2001). Industrial materials. Goodheart-Willcox.

Dyfyniad Arddull Chicago

Helsel, Larry D., and Peter P. Liu. Industrial Materials. Tinley Park, IL: Goodheart-Willcox, 2001.

Dyfyniad MLA

Helsel, Larry D., and Peter P. Liu. Industrial Materials. Goodheart-Willcox, 2001.

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