Cita APA (7a ed.)

Twain, M., Cable, G. W., & Turner, A. (1960). Mark Twain, G.W. Cable: The record of a literary friendship. State University Press.

Cita Chicago Style (17a ed.)

Twain, Mark, George Washington Cable, y Arlin Turner. Mark Twain, G.W. Cable: The Record of a Literary Friendship. Michigan: State University Press, 1960.

Cita MLA (9a ed.)

Twain, Mark, et al. Mark Twain, G.W. Cable: The Record of a Literary Friendship. State University Press, 1960.