Sari RP, Deswati L. Analysis of External and Internal Factors Causes of Student Learning Difficulties and Their Relation to Biology Learning Outcome in MAN 3 Padang. J. Biol. Learn. [Internet]. 2023 Mar. 30 [cited 2024 May 11];5(1):08-11. Available from: https://journal.univetbantara.ac.id/index.php/jbl/article/view/2769