Cita APA (7th ed.)

Curtin, D. P. (1988). Application software with wordperfect, the TWIN / 1-2-3 and dBase III Plus. Prentice-Hall.

Cita Chicago (17th ed.)

Curtin, Dennis P. Application Software with Wordperfect, the TWIN / 1-2-3 and DBase III Plus. Englewood Cliffs, N.J: Prentice-Hall, 1988.

Cita MLA (9th ed.)

Curtin, Dennis P. Application Software with Wordperfect, the TWIN / 1-2-3 and DBase III Plus. Prentice-Hall, 1988.