You must follow the rules contained in the Federal Acquisition Regulations (FAR) (48 CFR) and/or other procurement regulations applicable to your agency.
Code of Federal Regulations
Effective Date Note:
By FTR Amdt. 2011-01, 76 FR 18344, Apr. 1, 2011, § 302-12.107 was removed and reserved, effective Aug. 1, 2011.