http://e-repository.perpus.iainsalatiga.ac.id/18370
http://e-repository.perpus.iainsalatiga.ac.id/18389
http://e-repository.perpus.iainsalatiga.ac.id/18496
http://e-repository.perpus.iainsalatiga.ac.id/18686
http://e-repository.perpus.iainsalatiga.ac.id/18710