http://e-repository.perpus.iainsalatiga.ac.id/11692
http://e-repository.perpus.iainsalatiga.ac.id/13057
http://e-repository.perpus.iainsalatiga.ac.id/12912
http://e-repository.perpus.iainsalatiga.ac.id/13111
http://e-repository.perpus.iainsalatiga.ac.id/13110