Cita APA (7a ed.)

Keen, R., Vandiver, E., & Frazel, T. D. (2003). Luther's lives: Two contemporary accounts of Martin Luther. Manchester University Press.

Cita Chicago Style (17a ed.)

Keen, Ralph, Elizabeth Vandiver, y Thomas D. Frazel. Luther's Lives: Two Contemporary Accounts of Martin Luther. Manchester University Press, 2003.

Cita MLA (9a ed.)

Keen, Ralph, et al. Luther's Lives: Two Contemporary Accounts of Martin Luther. Manchester University Press, 2003.