HADIYATI, Tri; PURWANDARI, Ristiana Dyah. Analisis Kelayakan Bahan Ajar E-book Materi Lingkaran Untuk Peserta Didik Kelas VI Sekolah Dasar. Proceedings Series on Social Sciences & Humanities, [S. l.], v. 19, p. 219–230, 2024. Disponível em: https://conferenceproceedings.ump.ac.id/pssh/article/view/1357. Acesso em: 15 feb. 2026.