Cita APA (7a ed.)

Twain, M. (1941). Mark Twain's Letters to Will Bowen: My first, & oldest & dearest friend. University of Texas.

Cita Chicago Style (17a ed.)

Twain, Mark. Mark Twain's Letters to Will Bowen: My First, & Oldest & Dearest Friend. Austin: University of Texas, 1941.

Cita MLA (9a ed.)

Twain, Mark. Mark Twain's Letters to Will Bowen: My First, & Oldest & Dearest Friend. University of Texas, 1941.