Gaya APA

Perlick, W, W. (1981). Introduction to business: programmed learning aid for (Weeding) (3rd ed.). Company: Richard D. Irwin, Inc..

Gaya MLA

Perlick, Walter, W.. "Introduction to business: programmed learning aid for (Weeding)". 3rd ed. Company: Richard D. Irwin, Inc., 1981. Text.