Stone Bob. (1992). Successful direct marketing methods. NTC Bus Books.
Chicago-čujuhus (17. p.)Stone Bob. Successful Direct Marketing Methods. Chicago: NTC Bus Books, 1992.
MLA-čujuhus (9. p.)Stone Bob. Successful Direct Marketing Methods. NTC Bus Books, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.