Ristanti, F., & 		Arianto, F.
(2019).
 FLASH CARD MEDIA UTILIZATION TO IMPROVE STUDENT ACTIVITY AND LEARNING OUTCOMES OF FAUNA DISTRIBUTION SUBTOPIC IN CLASS XI IPS I SMA XIN ZHONG SURABAYA.
<em>Geosfera Indonesia, 4</em>(2), 90-104.
doi:10.19184/geosi.v4i2.9968