SCHAFFER ROBERT. (1986). MARKETING TOOLKIT: COMPUTER APPLICATIONS FOR MARKETING PRINCIPLES. ADDISON-WESLEY.
Chicago-čujuhus (17. p.)SCHAFFER ROBERT. MARKETING TOOLKIT: COMPUTER APPLICATIONS FOR MARKETING PRINCIPLES. MASSACHUSETTS: ADDISON-WESLEY, 1986.
MLA-čujuhus (9. p.)SCHAFFER ROBERT. MARKETING TOOLKIT: COMPUTER APPLICATIONS FOR MARKETING PRINCIPLES. ADDISON-WESLEY, 1986.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.