http://e-repository.perpus.iainsalatiga.ac.id/11749
http://e-repository.perpus.iainsalatiga.ac.id/11777
http://e-repository.perpus.iainsalatiga.ac.id/12273
http://e-repository.perpus.iainsalatiga.ac.id/12316
http://e-repository.perpus.iainsalatiga.ac.id/12198