Andriani, E., N. K. Latuconsina, and S. H. Mustamin. “Perbandingan Hasil Belajar Matematika Metode Snowball Throwing Disertai Pemberian Reward Dan Tanpa Reward Pada Siswa”. Alauddin Journal of Mathematics Education, Vol. 1, no. 2, Oct. 2019, pp. 83-89, doi:10.24252/ajme.v1i2.10966.