W. Alfisa and B. Bulkani, “Peningkatan Hasil Belajar Peserta Didik Melalui Penerapan Model Snowball Throwing Mata Pelajaran Bahasa Indonesia Kelas V SDN-4 Kasongan Lama Tahun Pelajaran 2016/2017: Improving Learning Outcomes of Students Through the Application of Snowball Throwing Models in Grade V Indonesian Language Subjects at Kasongan Elementary School-4 Old 2016/2017 Academic Year”, Tunas J Pendidikan Guru Sekolah Dasar, vol. 3, no. 1, pp. 1–7, Dec. 2017.