Dyfyniad APA

Drummond, A. (1988). Typing first course (5th ed.). McGraw-Hill Book Company.

Dyfyniad Arddull Chicago

Drummond, Archie. Typing First Course. 5th ed. London: McGraw-Hill Book Company, 1988.

Dyfyniad MLA

Drummond, Archie. Typing First Course. 5th ed. McGraw-Hill Book Company, 1988.

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