Cita APA (7a ed.)

ebrary, Inc, Rasmussen, R. K., & Twain, M. (2013). Dear Mark Twain: Letters from his readers. University of California Press.

Cita Chicago Style (17a ed.)

ebrary, Inc, R. Kent Rasmussen, y Mark Twain. Dear Mark Twain: Letters from His Readers. Berkeley: University of California Press, 2013.

Cita MLA (9a ed.)

ebrary, Inc, et al. Dear Mark Twain: Letters from His Readers. University of California Press, 2013.