Santrock, John W.
Children
McGraw-Hill, 2003
Buku Teks SO
Roberts, Ann
Helping children to be strong from birth to three
Routledge, 2007
Buku Teks SO
Santrock, John W.
Children
2003
Multimedia
Singer, Hans W. (Hans Wolfgang)
Children in the strategy of development
United Nations, 1972
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Smith, Peter K.
Understanding children's development
Wiley, 2011
Buku Teks SO