Hidayat, H., Ardi, Z., Herawati, S., ., K., & Amrina, Z. (2019). The Contribution of Internal Locus of Control and Self-Concept to Career Maturity in Vocational Higher Education. KnE Social Sciences, 3(15), 234–248. https://doi.org/10.18502/kss.v3i15.4370