APA (7th ed.) Citation

United States. Postmaster General. (1922). Illegal inclosures in 4th-class mail. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Postmaster General. Illegal Inclosures in 4th-class Mail. Washington: [publisher not identified], 1922.

MLA (9th ed.) Citation

United States. Postmaster General. Illegal Inclosures in 4th-class Mail. [publisher not identified], 1922.

Warning: These citations may not always be 100% accurate.