HARVARD BUSINESS REVIEW. (1973). HOW TO IMPROVE SALES MANAGEMENT. HARVARD BUS. SCHOOL.
Chicago-čujuhus (17. p.)HARVARD BUSINESS REVIEW. HOW TO IMPROVE SALES MANAGEMENT. USA: HARVARD BUS. SCHOOL, 1973.
MLA-čujuhus (9. p.)HARVARD BUSINESS REVIEW. HOW TO IMPROVE SALES MANAGEMENT. HARVARD BUS. SCHOOL, 1973.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.