http://e-repository.perpus.iainsalatiga.ac.id/17916
http://e-repository.perpus.iainsalatiga.ac.id/19089
http://e-repository.perpus.iainsalatiga.ac.id/19034
http://e-repository.perpus.iainsalatiga.ac.id/19177
http://e-repository.perpus.iainsalatiga.ac.id/19409