HULOCK, E. B. (1978). Child Development Elizabeth B. Hulock. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)HULOCK, Elizabeth B. Child Development Elizabeth B. Hulock. McGraw-Hill, 1978.
Lua MLA (8ú heag.)HULOCK, Elizabeth B. Child Development Elizabeth B. Hulock. McGraw-Hill, 1978.
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