Dyfyniad APA

Boundy, A. W. (1987). Engineering drawing (3rd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Boundy, A. W. Engineering Drawing. 3rd ed. New York: McGraw-Hill, 1987.

Dyfyniad MLA

Boundy, A. W. Engineering Drawing. 3rd ed. McGraw-Hill, 1987.

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