APA-viite

Passens, B., & Scholl, I. (1991). Wordperfect: Version 6.0. Prisma computer course.

Chicago-tyylinen lähdeviittaus

Passens, Bernd, ja Ingrid Scholl. Wordperfect: Version 6.0. London: Prisma computer course, 1991.

MLA-viite

Passens, Bernd, ja Ingrid Scholl. Wordperfect: Version 6.0. Prisma computer course, 1991.