APA (7th ed.) Citation

United States. Postmaster General. (1906). [Informacion postal general para el publico]. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Postmaster General. [Informacion Postal General Para El Publico]. [Washington]: [publisher not identified], 1906.

MLA (9th ed.) Citation

United States. Postmaster General. [Informacion Postal General Para El Publico]. [publisher not identified], 1906.

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