21.40—General requirements: Authority citations.

Each section in a document subject to codification must include, or be covered by, a complete citation of the authority under which the section is issued, including—
(a) General or specific authority delegated by statute; and
(b) Executive delegations, if any, necessary to link the statutory authority to the issuing agency.

Code of Federal Regulations

[50 FR 12468, Mar. 28, 1985]