http://e-repository.perpus.iainsalatiga.ac.id/13870
http://e-repository.perpus.iainsalatiga.ac.id/17252
http://e-repository.perpus.iainsalatiga.ac.id/17366
http://e-repository.perpus.iainsalatiga.ac.id/17732
http://e-repository.perpus.iainsalatiga.ac.id/17367