APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1852). Mail contracts by steamships between New York and California. Letter from the Postmaster General, transmitting information in relation to contracts for transportation of the mails between New York and California. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Mail Contracts by Steamships Between New York and California. Letter from the Postmaster General, Transmitting Information in Relation to Contracts for Transportation of the Mails Between New York and California. Washington: [publisher not identified], 1852.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Mail Contracts by Steamships Between New York and California. Letter from the Postmaster General, Transmitting Information in Relation to Contracts for Transportation of the Mails Between New York and California. [publisher not identified], 1852.