Suriyanti, Yulia, and Lidya Dau. 1. “Penerapan Model Pembelajaran Kooperatif Tipe Group Investigation Bermodifikasi Snowball Throwing Terhadap Hasil Belajar Ekonomi Siswa Kelas X SMA Nusantara Indah Sintang, Kalimantan Barat”. Surya Edunomics 1 (1), 43-48. https://ebook.umpwr.ac.id/suryaedunomics/article/view/1096.