“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, vol. 6, no. 1, Mar. 2020, pp. 76-93, doi:10.22437/bio.v6i1.8466.