Gaya APA

Dravillas, P. et al (1986). Power pack for the IBM PC : a powerful learning tool for word processing, spreadsheet, and data base applications in one package (Ist.ed.). St.Louis: Times Mirror/Mosby College Pub..

Gaya MLA

Dravillas, Paul. et al. "Power pack for the IBM PC : a powerful learning tool for word processing, spreadsheet, and data base applications in one package". Ist.ed. St.Louis: Times Mirror/Mosby College Pub., 1986. Text.