http://e-repository.perpus.iainsalatiga.ac.id/17838
http://e-repository.perpus.iainsalatiga.ac.id/18719
http://e-repository.perpus.iainsalatiga.ac.id/18370
http://e-repository.perpus.iainsalatiga.ac.id/18861
http://e-repository.perpus.iainsalatiga.ac.id/18991