Ansar, Ansar, Rahmat Hidayat, and Syahban Mada Ali. 2022. “Improving the Ability to Compare Content of Various Reviews to Find a Systematic Review Using the Problem Based Learning Model Private Vocational School 1 Mamuju”. Edumaspul: Jurnal Pendidikan 6 (2), 3142-50. https://ummaspul.e-journal.id/maspuljr/article/view/5289.