@misc{Jabłoński_Sławomir_Entry,
 author={Jabłoński, Sławomir and Kleka, Paweł},
 howpublished={online},
 publisher={Educational Research Institute},
 language={pol},
 type={article},
 title={Entry age to primary school and written speech development in grades 1–3: a comparative study},
 keywords={school readiness, written speech, reading and writing development},
}