Industry
- American Bar Association
- Association for the Advancement of Cost Engineering International (AACEI)
- ASTM International
- Chartered Institute of Building
- Construction Industry Institute
- Martindale-Hubbell
- Mechanical Contractors Association of America
- National Electrical Contractors Association
- Project Management Institute (PMI)
- RS Means Construction Bookstore
- US Army Corps of Engineers
- William Ibbs
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