Agency regulations frequently provide guidance on source selections: See for example, AFARS 5115.308 Source selection decision – "A source selection decision document must be prepared for all source selections and reflect the SSA's integrated assessment and decision. The document must be the single summary document supporting selection of the best value proposal consistent with the stated evaluation criteria. It must clearly explain the decision and documents the reasoning used by the SSA to reach a decision. The document should be releasable to the General Accounting Office and others authorized to receive proprietary and source selection information. When releasing a copy to offerors or to anyone not authorized to receive proprietary and source selection information, redacted material should be limited to that which is proprietary and that which must continue to be protected as source selection information."