Ristanto, Rizhal Hendi, et al. “From a Reader to a Scientist: Developing Cirgi Learning to Empower Scientific Literacy and Mastery of Biology Concept”. Biosfer: Jurnal Pendidikan Biologi, vol. 11, no. 2, Nov. 2018, pp. 90-100, doi:10.21009/biosferjpb.v11n2.90-100.