http://e-repository.perpus.iainsalatiga.ac.id/9967
http://e-repository.perpus.iainsalatiga.ac.id/9470
http://e-repository.perpus.iainsalatiga.ac.id/9867
http://e-repository.perpus.iainsalatiga.ac.id/9265
http://e-repository.perpus.iainsalatiga.ac.id/7767