Oktaviani, Ria, et al. “THE TEACHER PROBLEMS ANALYSIS OF CRITICAL THINKING SKILLS, LEARNING MOTIVATION AND STUDENT LEARNING OUTCOMES ”. IJER - INDONESIAN JOURNAL OF EDUCATIONAL REVIEW, vol. 8, no. 2, Dec. 2021, pp. 72-79, https://journal.unj.ac.id/unj/index.php/ijer/article/view/28903.