Rha’ifa, F. A., K. Khairuddin, and I. W. Merta. “Perbedaan Hasil Belajar IPA Biologi Menggunakan Model Reciprocal Learning Dan Problem Based Learning”. Jurnal Pijar Mipa, vol. 14, no. 1, May 2019, pp. 107-12, doi:10.29303/jpm.v14i1.973.