Marwiyah, M., 		Rusijono, R., & 		Arianto, F.
(2019).
 THE DEVELOPMENT OF CAI BASED ANDROID IN SOLAR SYSTEM AND UNIVERSE TOPIC FOR TENTH-GRADE.
<em>Geosfera Indonesia, 4</em>(2), 63-77.
doi:10.19184/geosi.v4i2.9824