Dyfyniad APA

Den Hartog, J. P. (1977). Strength of materials. Dover publications.

Dyfyniad Arddull Chicago

Den Hartog, J P. Strength of Materials. New York: Dover publications, 1977.

Dyfyniad MLA

Den Hartog, J P. Strength of Materials. Dover publications, 1977.

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