Παραπομπή APA

Cassel, D. (1990). Learning Dos, word perfect 5.0, lotus1-2-3, and d base III plus. Prenticehall.

Παραπομπή Chicago Style

Cassel, Don. Learning Dos, Word Perfect 5.0, Lotus1-2-3, and D Base III Plus. New Jersey: Prenticehall, 1990.

Παραπομπή MLA

Cassel, Don. Learning Dos, Word Perfect 5.0, Lotus1-2-3, and D Base III Plus. Prenticehall, 1990.