Sariyati F, Ratnaningsih A, Pangestika RR. Development of Calistung E-Book with Flora and Fauna Character in Indonesian and Mathematics Learning Grade I Muhammadiyah Purworejo Elementary School. Jurnal Pendidikan Amartha [Internet]. 2023 Jan. 1 [cited 2026 Jun. 22];1(2):38-45. Available from: https://www.rayyanjurnal.com/index.php/jpa/article/view/87