“IQ TEST STANDARDIZATION OF MARTEN LOTHER JOHAN WITH CHILDREEN OF THE SIX YEAR” (2016) Journal Of Educational and Psychological Researches, 13(51), pp. 252–280. Available at: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/327 (Accessed: 5 May 2025).