http://e-repository.perpus.iainsalatiga.ac.id/17546
http://e-repository.perpus.iainsalatiga.ac.id/17641
http://e-repository.perpus.iainsalatiga.ac.id/17621
http://e-repository.perpus.iainsalatiga.ac.id/15961
http://e-repository.perpus.iainsalatiga.ac.id/15944