Chartered Institute of Purchasing and Supply:	www.cips.org
Institute of Operations Management:	www.iomnet.org.uk
Institute of Logistics and Transport:	www.iolt.org.uk
Irish Institute of Purchasing and Materials Management:	www.iipmm.ie
American Production and Inventory Control Society:	www.apics.org
American National Association of Purchasing Management:	www.napm.org
Purchasing Management Association of Canada:	www.pmac.ca
Negotiate Ltd:	www.negotiate.co.uk
Dun and Bradstreet:	www.dnb.com