Hoffmann, L. (1988). Developmental psychology today (5th. ed.). Random House.
Chicago-čujuhus (17. p.)Hoffmann, Lois. Developmental Psychology Today. 5th. ed. San Diego: Random House, 1988.
MLA-čujuhus (9. p.)Hoffmann, Lois. Developmental Psychology Today. 5th. ed. Random House, 1988.
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