- Department of Defense Far Supplement (Dfars): As of July 1, 2019
- Federal Acquisition Regulation (Far) as of January 1, 2019: As of January 1, 2019
- Federal Acquisition Regulation (Far): As of July 1, 2018
- Federal Acquisition Regulation (FAR) : As of January 1 2020
- Department of Defense Far Supplement (Dfars): As of January 1, 2019