Gaya APA

Colby, A, &, K, L. (1987). The measurement of moral judgment: Theoretical foundations and research validation, vol. I. . Cambridge: Cambridge Cambridge University Press.

Gaya MLA

Colby, Anne, &, Kohlberg,, Lawrence. "The measurement of moral judgment: Theoretical foundations and research validation, vol. I. ". Cambridge: Cambridge Cambridge University Press, 1987. Buku.