APA-čujuhus (7. p.)
Duska, R. F., & Whelan, M. (1975). Moral development: A guide to Piaget and Kohlberg. Paulist Press.
Chicago-čujuhus (17. p.)
Duska, Ronald F., juo Mariellen Whelan. Moral Development: A Guide to Piaget and Kohlberg. New York: Paulist Press, 1975.
MLA-čujuhus (9. p.)
Duska, Ronald F., juo Mariellen Whelan. Moral Development: A Guide to Piaget and Kohlberg. Paulist Press, 1975.
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