http://e-repository.perpus.iainsalatiga.ac.id/17916
http://e-repository.perpus.iainsalatiga.ac.id/18978
http://e-repository.perpus.iainsalatiga.ac.id/18482
http://e-repository.perpus.iainsalatiga.ac.id/19777
http://e-repository.perpus.iainsalatiga.ac.id/19979