Wulandari, Kartika, Sari Narulita, and Noor Rachmat. 2013. “Efektivitas Pembelajaran PAI Dengan Model Snowball Throwing”. Jurnal Studi Al-Qur’an 9 (2), 124 -38. http://103.8.12.212:33180/unj/index.php/jsq/article/view/4495.