“IMPROVING UNDERSTANDING AND LEARNING OUTCOMES OF STUDENTS GRADE X GB 3 SMK NEGERI 2 TASIKMALAYA ON COMPETENCE ATOMIC STRUCTURE THROUGH THE METHOD OF DISCOVERY GUIDED”. 2019. Naturalistic: Jurnal Kajian Dan Penelitian Pendidikan Dan Pembelajaran 4 (1): 471-80. https://journal.umtas.ac.id/naturalistic/article/view/661.