@conference{21438ab966cf482f99704cb254a695f8,
title = "Mixed groups in early childhood education and care: the role of peer interaction in cognitive, language and social-emotional development",
author = "{de Haan}, A.K.E. and E.P.J.M. Elbers and P.P.M. Leseman",
note = "30th conference of the International School Psychology Association; 30th conference of the International School Psychology Association ; Conference date: 08-07-2008 Through 13-07-2008",
year = "2008",
month = jul,
day = "8",
language = "Undefined/Unknown",
}