http://e-repository.perpus.iainsalatiga.ac.id/15360
http://e-repository.perpus.iainsalatiga.ac.id/15079
http://e-repository.perpus.iainsalatiga.ac.id/13959
http://e-repository.perpus.iainsalatiga.ac.id/14016
http://e-repository.perpus.iainsalatiga.ac.id/14174