APA (7th ed.) Citation

Dearborn, H. A. S. (1839). Letters on the internal improvements and commerce of the West. [publisher not identified].

Chicago Style (17th ed.) Citation

Dearborn, H. A. S. Letters on the Internal Improvements and Commerce of the West. [Place of publication not identified]: [publisher not identified], 1839.

MLA (9th ed.) Citation

Dearborn, H. A. S. Letters on the Internal Improvements and Commerce of the West. [publisher not identified], 1839.