Asmariati. “Penerapan Model Pembelajaran Kooperatif Tipe Snowball Throwing Untuk Meningkatkan Aktivitas Dan Hasil Belajar Siswa”. Jurnal Kinerja Kependidikan (JKK): Facilities of Educator Career and Educational Scientific Information, vol. 2, no. 4, May 2022, pp. 722-45, https://journalserambi.org/index.php/jkk/article/view/124.