Drummond, A. (1988). Typing first course (5th ed.). McGraw-Hill Book Company.
Cita Chicago (17th ed.)Drummond, Archie. Typing First Course. 5th ed. London: McGraw-Hill Book Company, 1988.
Cita MLA (9th ed.)Drummond, Archie. Typing First Course. 5th ed. McGraw-Hill Book Company, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.