| | Altus Group | |
| | Altus Andrews | |
| | Altus Edwin Hill | |
| | Altus Page Kirkland | |
| | American Society of Appraisers | |
| | CoStar Group | |
| | Institute for Professionals in Taxation | |
| | International Association of Assessing Officers | |
| | International Real Estate Digest | |
| | LoopNet | |
| | On-line Assessors | |
| | Property Tax in Texas | |
| | Texas A&M Real Estate Center | |
| | Urban Land Institute | |
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