http://e-repository.perpus.iainsalatiga.ac.id/9472
http://e-repository.perpus.iainsalatiga.ac.id/9780
http://e-repository.perpus.iainsalatiga.ac.id/9297
http://e-repository.perpus.iainsalatiga.ac.id/10483
http://e-repository.perpus.iainsalatiga.ac.id/10640