Umansky, W. (1998). Young children with special needs (3rd ed.). Merrill.
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Chicago-čujuhus (17. p.)
Umansky, Warren. Young Children with Special Needs. 3rd ed. Upper Saddle River: Merrill, 1998.
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MLA-čujuhus (9. p.)
Umansky, Warren. Young Children with Special Needs. 3rd ed. Merrill, 1998.
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