http://e-repository.perpus.iainsalatiga.ac.id/12265
http://e-repository.perpus.iainsalatiga.ac.id/11644
http://e-repository.perpus.iainsalatiga.ac.id/10749
http://e-repository.perpus.iainsalatiga.ac.id/11369
http://e-repository.perpus.iainsalatiga.ac.id/10864