http://e-repository.perpus.iainsalatiga.ac.id/19825
http://e-repository.perpus.iainsalatiga.ac.id/19903
http://e-repository.perpus.iainsalatiga.ac.id/19798
http://e-repository.perpus.iainsalatiga.ac.id/19985
http://e-repository.perpus.iainsalatiga.ac.id/20063