Drummond, A. (1988). Typing first course (5th ed.). McGraw-Hill Book Company.
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Chicago-čujuhus (17. p.)
Drummond, Archie. Typing First Course. 5th ed. London: McGraw-Hill Book Company, 1988.
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MLA-čujuhus (9. p.)
Drummond, Archie. Typing First Course. 5th ed. McGraw-Hill Book Company, 1988.
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