http://e-repository.perpus.iainsalatiga.ac.id/13954
http://e-repository.perpus.iainsalatiga.ac.id/14405
http://e-repository.perpus.iainsalatiga.ac.id/14471
http://e-repository.perpus.iainsalatiga.ac.id/14513
http://e-repository.perpus.iainsalatiga.ac.id/14687