http://e-repository.perpus.iainsalatiga.ac.id/8454
http://e-repository.perpus.iainsalatiga.ac.id/8791/
http://e-repository.perpus.iainsalatiga.ac.id/8831
http://e-repository.perpus.iainsalatiga.ac.id/8656
http://e-repository.perpus.iainsalatiga.ac.id/8535