Anwar, and Muhammad Zaki. “PENERAPAN PENDEKATAN PROBLEM POSSING DALAM UPAYA MENINGKATKAN SELF CONFIDANCE CALON GURU MATEMATIKA UNIVERSITAS SAMUDRA”. Numeracy 4, no. 2 (October 31, 2017): 90-98. Accessed May 5, 2024. https://ejournal.bbg.ac.id/numeracy/article/view/270.