Burhanudin, M. and Sodiq, I. 2016. Constraints of History Teachers in the 2013 Curriculum Using a Scientific Approach at SMK Negeri 7 Semarang. Indonesian Journal of History Education. 1, 1 (Mar. 2016), 49-64. DOI:https://doi.org/10.15294/ijhe.v6i1.27357.