Hayatun Nufus and Muliana 2021. Pengaruh Model Pembelajaran Kooperatif Tipe Group Investigation (GI) Terhadap Kemampuan Komunikasi Matematis Siswa Dan Sikap Positif Siswa. Ar-Riyadhiyyat: Journal of Mathematics Education. 2, 1 (Jul. 2021), 27–37. DOI:https://doi.org/10.47766/arriyadhiyyat.v2i1.1398.