Yesika Theresia Harahap. “The Effect Of Parents’ Social Economic Status and Learning Motivation On Economic Learning Achievement Of Students Of Class X Sma Negeri 1 Arse Academic Year 2017 2018”. Outline Journal of Education 1, no. 2 (August 27, 2022): 67–72. Accessed September 9, 2025. https://journal.outlinepublisher.com/index.php/OJE/article/view/18.