Fenson, L. (1991). Human development 91/92 (19th ed.). Dushkin.
Chicago-čujuhus (17. p.)Fenson, Larry. Human Development 91/92. 19th ed. Sluice Dock: Dushkin, 1991.
MLA-čujuhus (9. p.)Fenson, Larry. Human Development 91/92. 19th ed. Dushkin, 1991.
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