International Trade Center UNCTAD/WTO. (1998). ISO 9000: A workbook for service firms in developing countries. International Trade Center.
Chicago-Zitierstil (17. Ausg.)International Trade Center UNCTAD/WTO. ISO 9000: A Workbook for Service Firms in Developing Countries. Geneva: International Trade Center, 1998.
MLA-Zitierstil (9. Ausg.)International Trade Center UNCTAD/WTO. ISO 9000: A Workbook for Service Firms in Developing Countries. International Trade Center, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.