Khairina, E., A. Adrimas, and S. Sjafrizal. “Potential Analysis of Small and Medium Industries (SMIs) in Lima Puluh Kota Regency, West Sumatra”. Jurnal Perspektif Pembiayaan Dan Pembangunan Daerah, vol. 6, no. 5, May 2019, pp. 583 -94, doi:10.22437/ppd.v6i5.6342.