Dyfyniad APA

Goetsch, D. L., & Nelson, J. A. (1986). Technical drawing and design. Delmar Publishers.

Dyfyniad Arddull Chicago

Goetsch, David L., and John A. Nelson. Technical Drawing and Design. Albany, N.Y.: Delmar Publishers, 1986.

Dyfyniad MLA

Goetsch, David L., and John A. Nelson. Technical Drawing and Design. Delmar Publishers, 1986.

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