http://repository.uhamka.ac.id/id/eprint/14985/
Pengembangan Game Edukasi Story Math Game: Addition and Subtraction Berbasis Android
Taqiyyah, Atikah
http://repository.uhamka.ac.id/id/eprint/14985/1/FKIP_PENDIDIKAN%20MATEMATIKA_1601105105_ATIKAH%20TAQIYYAH.pdf