Lay Yoon Fah, Crispina Gregory K. Han, and Getrude C. Ah Gang @ Grace. “A Glimpse of Teacher-Level Characteristics Among Mathematics Teachers at Rural Secondary Schools of Sabah, Malaysia”. Jurnal Pemikir Pendidikan, vol. 9, no. 1, Dec. 2018, pp. 1-30, doi:10.51200/jpp.v9i1.7662.