Hartriani, N., and R. Veronica. “KEEFEKTIFAN MODEL PEMBELAJARAN TWO STAY TWO STRAY BERBASIS REALISTIC MATHEMATICS EDUCATION TERHADAP KEMAMPUAN PENALARAN MATEMATIK”. Unnes Journal of Mathematics Education, Vol. 4, no. 1, Mar. 2015, doi:10.15294/ujme.v4i1.7445.