APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1821). Letter from the Postmaster General, transmitting a statement of contracts made by the Post Office Department during the last year. Also, a statement of contracts made in a former year, which were then casually omitted. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, Transmitting a Statement of Contracts Made by the Post Office Department During the Last Year. Also, a Statement of Contracts Made in a Former Year, Which Were Then Casually Omitted. Washington: [publisher not identified], 1821.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letter from the Postmaster General, Transmitting a Statement of Contracts Made by the Post Office Department During the Last Year. Also, a Statement of Contracts Made in a Former Year, Which Were Then Casually Omitted. [publisher not identified], 1821.