http://e-repository.perpus.iainsalatiga.ac.id/19436
http://e-repository.perpus.iainsalatiga.ac.id/19979
http://e-repository.perpus.iainsalatiga.ac.id/19692
http://e-repository.perpus.iainsalatiga.ac.id/19486
http://e-repository.perpus.iainsalatiga.ac.id/17916