Ristanti, Felisia, AND 		Arianto, Fajar.
" 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</em> [Online], Volume 4 Number 2 (1 August 2019)