APA (7th ed.) Citation

United States. Postmaster General. (1924). Domestic mail bearing foreign return card. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Postmaster General. Domestic Mail Bearing Foreign Return Card. Washington: [publisher not identified], 1924.

MLA (9th ed.) Citation

United States. Postmaster General. Domestic Mail Bearing Foreign Return Card. [publisher not identified], 1924.

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