http://e-repository.perpus.iainsalatiga.ac.id/15292
http://e-repository.perpus.iainsalatiga.ac.id/14736
http://e-repository.perpus.iainsalatiga.ac.id/14969
http://e-repository.perpus.iainsalatiga.ac.id/16313
http://e-repository.perpus.iainsalatiga.ac.id/15983