http://e-repository.perpus.iainsalatiga.ac.id/18114
http://e-repository.perpus.iainsalatiga.ac.id/18719
http://e-repository.perpus.iainsalatiga.ac.id/17922
http://e-repository.perpus.iainsalatiga.ac.id/18364
http://e-repository.perpus.iainsalatiga.ac.id/18833