Witoko, Rudi, and Wardono Wardono. “Analisis Model Pembelajaran Open-Ended Learning (OEL) Dengan Assessment for Learning (AfL) Ditinjau Dari Kreativitas Belajar Matematika”. PRISMA, Prosiding Seminar Nasional Matematika 2 (February 27, 2019): 748-753. Accessed April 27, 2024. https://journal.unnes.ac.id/sju/prisma/article/view/29262.