http://e-repository.perpus.iainsalatiga.ac.id/19254
http://e-repository.perpus.iainsalatiga.ac.id/18707
http://e-repository.perpus.iainsalatiga.ac.id/17573
http://e-repository.perpus.iainsalatiga.ac.id/17941
http://e-repository.perpus.iainsalatiga.ac.id/16066