APA (7e ed.) Bronvermelding

Curtin, D. P. (1988). Application software with WordPerfect, the Twin/1-2-3, and dBase III Plus (International ed.). Prentice-Hall International.

Chicago (17e ed.) Bronvermelding

Curtin, Dennis P. Application Software with WordPerfect, the Twin/1-2-3, and DBase III Plus. International ed. London: Prentice-Hall International, 1988.

MLA (8e ed.) Bronvermelding

Curtin, Dennis P. Application Software with WordPerfect, the Twin/1-2-3, and DBase III Plus. International ed. Prentice-Hall International, 1988.