http://e-repository.perpus.iainsalatiga.ac.id/19595
http://e-repository.perpus.iainsalatiga.ac.id/18992
http://e-repository.perpus.iainsalatiga.ac.id/19167
http://e-repository.perpus.iainsalatiga.ac.id/18346
http://e-repository.perpus.iainsalatiga.ac.id/18413