AFRINAWATI. “THE EFFECT OF STUDENTS’ ATTITUDE AND PORTFOLIO ASSESSMENT TOWARDS THE ACHIEVEMENT OF STUDENTS’ SCIENCE PROCESS SKILL”. Jurnal Evaluasi Pendidikan 4, no. 1 (March 30, 2013): 12–24. Accessed November 6, 2024. https://journal.unj.ac.id/unj/index.php/jep/article/view/2717.