Risalahwati, Desy Sukma, Makrina Tindangen, and Sukartiningsih Sukartiningsih. “Pengembangan Perangkat Pembelajaran Model PQ4R Media Concept Mapping Terhadap Hasil Belajar Biologi : The Development of Teaching Administrations by Using PQ4R Learning Model Concept Mapping to Learning Outcomes of Biology”. BIODIK 6, no. 1 (March 26, 2020): 76-93. Accessed October 26, 2021. https://online-journal.unja.ac.id/biodik/article/view/8466.