Pitter, K. M. (1992). Using application software: Using the IBM PC, WordPerfect 4.2, Quattro, dBase III Plus (3rd ed.). McGraw-Hill.
Chicago Style aipamenaPitter, Keiko M. Using Application Software: Using the IBM PC, WordPerfect 4.2, Quattro, DBase III Plus. 3rd ed. New York: McGraw-Hill, 1992.
MLA aipamenaPitter, Keiko M. Using Application Software: Using the IBM PC, WordPerfect 4.2, Quattro, DBase III Plus. 3rd ed. McGraw-Hill, 1992.
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