http://e-repository.perpus.iainsalatiga.ac.id/11619
http://e-repository.perpus.iainsalatiga.ac.id/18113
http://e-repository.perpus.iainsalatiga.ac.id/17727
http://e-repository.perpus.iainsalatiga.ac.id/17875
http://e-repository.perpus.iainsalatiga.ac.id/17660