Mekuria, Yilfashewa Seyoum, et al. “Analysis of Students’ Commitment and Attitude towards Mathematics in Secondary School of Dega Woreda, Oromia National Regional State, Ethiopia”. Humaniora: Journal of Indonesian Culture and Society, vol. 9, no. 2, July 2018, pp. 187-9, doi:10.21512/humaniora.v9i2.4738.