American Psychological Association
Duska, Romald, & Whelan, Mariellen ( 1977 ). Moral Development a Guide to Piaget and Kohlberg ( 00 ed. ). Dublin.
Modern Language Association
Duska, Romald and Whelan, Mariellen. Moral Development a Guide to Piaget and Kohlberg . Dublin. 1977
Chicago Citation
Duska, Romald and Whelan, Mariellen. Moral Development a Guide to Piaget and Kohlberg . 00 .Macmillan
: Dublin, 1977.
American Medical Association
Duska, Romald and Whelan, Mariellen. Moral Development a Guide to Piaget and Kohlberg . Dublin; 1977.