Zainudin, M. (2016) “Penerapan Grey-Tall and Polya Based Learning Disertai Assessment for Learning untuk Meningkatkan Kreativitas Mahasiswa: Application of Grey-Tall and Polya Based Learning Accompanied by Assessment for Learning to Increase Student Creativity”, Pedagogia : Jurnal Pendidikan, 5(2), pp. 225–238. doi: 10.21070/pedagogia.v5i2.255.