APA (7th ed.) Citation

United States. Post Office Department. (1924). Acceptance of properly labeled sealed parcels of merchandise at 4th-class rates of postage. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department. Acceptance of Properly Labeled Sealed Parcels of Merchandise at 4th-class Rates of Postage. [Washington]: [publisher not identified], 1924.

MLA (9th ed.) Citation

United States. Post Office Department. Acceptance of Properly Labeled Sealed Parcels of Merchandise at 4th-class Rates of Postage. [publisher not identified], 1924.