http://e-repository.perpus.iainsalatiga.ac.id/13114
http://e-repository.perpus.iainsalatiga.ac.id/17014
http://e-repository.perpus.iainsalatiga.ac.id/16105
http://e-repository.perpus.iainsalatiga.ac.id/16854
http://e-repository.perpus.iainsalatiga.ac.id/17453