Effect of a Psychological Skills Education Program (PSEP) on Free Kicks and Penalty Kicks For High School soccer player. JSS [انترنت]. 1 سبتمبر، 2020 [وثق 18 يناير، 2025];12(42):212 – 227. موجود في: https://pessj.uodiyala.edu.iq/index.php/1/article/view/458