The Code of Federal Regulations (CFR) is an annual codification of general and permanent rules published by the executive departments and agencies of the U.S. Federal Government. You can purchase physical copies through official government channels or major commercial retailers. Official Source
Code of Federal Regulations (CFR) | U.S. Government Bookstore
Before buying, consider if a free digital version meets your needs:
The Code of Federal Regulations (CFR) is an annual codification of general and permanent rules published by the executive departments and agencies of the U.S. Federal Government. You can purchase physical copies through official government channels or major commercial retailers. Official Source
Code of Federal Regulations (CFR) | U.S. Government Bookstore
Before buying, consider if a free digital version meets your needs: