APA-viite (7. p.)

Dykes, D. L. (1991). An easy course in using WordPerfect: Versions 5.0 and 5.1 for IBM-compatible computers. Grapevine Publications.

Chicago-viite (17. p.)

Dykes, David L. An Easy Course in Using WordPerfect: Versions 5.0 and 5.1 for IBM-compatible Computers. Corvallis, OR: Grapevine Publications, 1991.

MLA-viite (9. p.)

Dykes, David L. An Easy Course in Using WordPerfect: Versions 5.0 and 5.1 for IBM-compatible Computers. Grapevine Publications, 1991.