Gaya APA

Warrner, T, W., Werner, D, M. (1989). Using LOTUS 1-2-3, SuperCalc 4, Word Perfect, Wordstar, and dBASE III . Illinois: Scott, Foresman and Co..

Gaya MLA

Warrner, Thomas, W., Werner, D., Michael. "Using LOTUS 1-2-3, SuperCalc 4, Word Perfect, Wordstar, and dBASE III". Illinois: Scott, Foresman and Co., 1989. Text.