Dyfyniad APA

Timoshenko, S. (1955). Strength of materials (3rd .ed.). Van Nostrand Reinhold Company.

Dyfyniad Arddull Chicago

Timoshenko, S. Strength of Materials. 3rd .ed. New Jersey: Van Nostrand Reinhold Company, 1955.

Dyfyniad MLA

Timoshenko, S. Strength of Materials. 3rd .ed. Van Nostrand Reinhold Company, 1955.

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