http://e-repository.perpus.iainsalatiga.ac.id/15979
http://e-repository.perpus.iainsalatiga.ac.id/15944
http://e-repository.perpus.iainsalatiga.ac.id/15961
http://e-repository.perpus.iainsalatiga.ac.id/15954
http://e-repository.perpus.iainsalatiga.ac.id/13301