Curtin, D. P. (1988). Application software with wordperfect, the TWIN / 1-2-3 and dBase III Plus. Prentice-Hall.
Chicago Style (17. basım) AtıfCurtin, Dennis P. Application Software with Wordperfect, the TWIN / 1-2-3 and DBase III Plus. Englewood Cliffs, N.J: Prentice-Hall, 1988.
MLA (9th ed.) AtıfCurtin, Dennis P. Application Software with Wordperfect, the TWIN / 1-2-3 and DBase III Plus. Prentice-Hall, 1988.
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