http://e-repository.perpus.iainsalatiga.ac.id/15850
http://e-repository.perpus.iainsalatiga.ac.id/15873
http://e-repository.perpus.iainsalatiga.ac.id/18812
http://e-repository.perpus.iainsalatiga.ac.id/15944
http://e-repository.perpus.iainsalatiga.ac.id/15961