http://e-repository.perpus.iainsalatiga.ac.id/8047
http://e-repository.perpus.iainsalatiga.ac.id/10063
http://e-repository.perpus.iainsalatiga.ac.id/9398
http://e-repository.perpus.iainsalatiga.ac.id/10693
http://e-repository.perpus.iainsalatiga.ac.id/10436