APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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