| bx.org | The Builders Exchange of Central Ohio |
| bcanj.com | Building Contractors Association of New Jersey (BCANJ) |
| csa-dc.org | Contract Services Association of America (CSA) |
| cimcigs.co.uk | Chartered Institute of Marketing Construction Industry Group Scotland (CIMCIGS) |
| asuc.org.uk | Association of Specialist Underpinning Contractors (ASUCplus) |
| asaonline.com | American Subcontractors Association, Inc. |
| abc.org | Associated Builders and Contractors (ABC) |
| construction-institute.org | Construction Industry Institute |
| ctbuh.org | Council on Tall Buildings and Urban Habitat |
| efnarc.org | EFNARC |
| themasterbuilder.com | www.themasterbuilder.com/ |
251572