Cita APA (7a ed.)

Colby, A., James, J., & Hart, D. (1998). Competence and character through life. University of Chicago Press.

Cita Chicago Style (17a ed.)

Colby, Anne, Jacquelyn James, y Daniel Hart. Competence and Character Through Life. Chicago ; London: University of Chicago Press, 1998.

Cita MLA (9a ed.)

Colby, Anne, et al. Competence and Character Through Life. University of Chicago Press, 1998.