“IQ TEST STANDARDIZATION OF MARTEN LOTHER JOHAN WITH CHILDREEN OF THE SEVEN YEAR” (2017) Journal Of Educational and Psychological Researches, 14(53), pp. 462–488. Available at: https://www.jperc.uobaghdad.edu.iq/index.php/jperc/article/view/271 (Accessed: 5 July 2025).