| pmi.org | Project Management Institute |
| nspe.org | National Society of Professional Engineers |
| ice.org.uk | Institution of Civil Engineers |
| feani.org | Feani - Official Web Site |
| efcanet.org | EFCA - European Federation of Engineering Consultancy Associations |
| dbia.org | Design-build Institute Of America, Dbia |
| asce.org | American Society of Civil Engineers [ASCE] |
| acenet.co.uk | The Association of Consulting Engineers (ACE) |
| acec.org | American Council Of Engineering Companies - Acec |
| acec.ca | Canada Consulting Engineers |
| acenet.co.uk | www.acenet.co.uk/ |
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