APA (7th ed.) Citation

United States. Postmaster General. (1917). Final Christmas post office notice. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Postmaster General. Final Christmas Post Office Notice. Washington: [publisher not identified], 1917.

MLA (9th ed.) Citation

United States. Postmaster General. Final Christmas Post Office Notice. [publisher not identified], 1917.

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