1 CFR § 21.51 - General.

---
identifier: "/us/cfr/t1/s21.51"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "1 CFR § 21.51 - General."
title_number: 1
title_name: "General Provisions"
section_number: "21.51"
section_name: "General."
chapter_name: "ADMINISTRATIVE COMMITTEE OF THE FEDERAL REGISTER"
subchapter_number: "E"
subchapter_name: "PREPARATION, TRANSMITTAL, AND PROCESSING OF DOCUMENTS"
part_number: "21"
part_name: "PREPARATION OF DOCUMENTS SUBJECT TO CODIFICATION"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "44 U.S.C. 1506; sec. 6, E.O. 10530, 19 FR 2709; 3 CFR, 1954-1958 Comp., p. 189."
regulatory_source: "37 FR 23611, Nov. 4, 1972, unless otherwise noted."
cfr_part: "21"
---


# 21.51 General.

(a) Formal citations of authority shall be in the shortest form compatible with positive identification and ready reference.

(b) The Office of the Federal Register shall assist agencies in developing model citations.