“Penalaran Proporsional Siswa Kelas Menengah Dalam Menyelesaikan Masalah Matematika Ditinjau Dari Adversity Quotient : Proportional Reasoning of Middle School Students in Solving Mathematical Problems Viewed From Adversity Quotient”. Pedagogia : Jurnal Pendidikan, vol. 9, no. 1, Mar. 2020, pp. 67-80, https://doi.org/10.21070/pedagogia.v9i1.259.