1.
Supriyantoro D, Sumbawati MS, Sitompul NC. Pengembangan Perangkat Pembelajaran IPA dengan Model Problem Based Learning Berbasis Outdoor Learning. J. Pijar.MIPA [Internet]. 2019 Jul. 23 [cited 2023 Jan. 30];14(2):42-8. Available from: https://jurnalfkip.unram.ac.id/index.php/JPM/article/view/1136