APA (7th ed.) Citation

United States. Post Office Department. (1851). Proposals for carrying the mail: In New Jersey, Pennsylvania, Delaware, Maryland, and Ohio .. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department. Proposals for Carrying the Mail: In New Jersey, Pennsylvania, Delaware, Maryland, and Ohio .. Washington [D.C.]: [publisher not identified], 1851.

MLA (8th ed.) Citation

United States. Post Office Department. Proposals for Carrying the Mail: In New Jersey, Pennsylvania, Delaware, Maryland, and Ohio .. [publisher not identified], 1851.