United States. Postmaster General. (1924). Insurance and collect-on-delivery services extended to 3rd-class mail, amendment to Postal laws and regulations (effective July 1, 1924). [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Postmaster General. Insurance and Collect-on-delivery Services Extended to 3rd-class Mail, Amendment to Postal Laws and Regulations (effective July 1, 1924). Washington: [publisher not identified], 1924.
MLA (9th ed.) CitationUnited States. Postmaster General. Insurance and Collect-on-delivery Services Extended to 3rd-class Mail, Amendment to Postal Laws and Regulations (effective July 1, 1924). [publisher not identified], 1924.
Warning: These citations may not always be 100% accurate.