APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1861). Contingent expenses of the Post Office Department. Letter from the Postmaster General, transmitting a statement of the contingent expenses of the Post Office Department. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Contingent Expenses of the Post Office Department. Letter from the Postmaster General, Transmitting a Statement of the Contingent Expenses of the Post Office Department. Washington: [publisher not identified], 1861.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Contingent Expenses of the Post Office Department. Letter from the Postmaster General, Transmitting a Statement of the Contingent Expenses of the Post Office Department. [publisher not identified], 1861.