| napm.org | National Association of Purchasing Management |
| eclubbuy.com | Purchasing Association of Private Clubs |
| pmifc.de | Project Management Institute - Frankfurt Chapter e.V. |
| nigp.org | National Institute of Governmental Purchasing |
| naspo.org | Naspo |
| ism.ws | Institute For Supply Management - Advancing The Purchasing And Supply Managemen |
| cips.org | Chartered Institute of Purchasing & Supply |
| iappm.org | International Association of Project and Program Management |
| hkipm.org.hk | Hong Kong Institute of Project Management |
| gpm-ipma.de | GPM Deutsche Gesellschaft fur Projektmanagement |
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