Firlan, Firlan, Werry Darta Taifur, and Indrawari Indrawari. 2019. “Human Capital of School-Age Population in West Sumatera: Measurement and Determinant”. Jurnal Perspektif Pembiayaan Dan Pembangunan Daerah 7 (1):1 - 14. https://doi.org/10.22437/ppd.v7i1.6977.