Nurhayati, et al. “The Comparison of Junior High School Student Comprehension about Slow Loris Conservation Based on Participation on Slow Loris Awareness Activity”. Biosfer: Jurnal Pendidikan Biologi, vol. 7, no. 1, Jan. 2018, pp. 49-57, doi:10.21009/biosferjpb.7-1.8.