1 CFR § 21.23 - Parallel citations of Code and Federal Register.

---
identifier: "/us/cfr/t1/s21.23"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "1 CFR § 21.23 - Parallel citations of Code and Federal Register."
title_number: 1
title_name: "General Provisions"
section_number: "21.23"
section_name: "Parallel citations of Code and Federal Register."
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"
---


# 21.23 Parallel citations of Code and Federal Register.

For parallel reference, the Code of Federal Regulations and the *Federal Register* may be cited in the following forms, as appropriate:

___ CFR ___ (___ FR ___). § ___ of this chapter (___ FR ___).