http://e-repository.perpus.iainsalatiga.ac.id/9446
http://e-repository.perpus.iainsalatiga.ac.id/9183
http://e-repository.perpus.iainsalatiga.ac.id/9462
http://e-repository.perpus.iainsalatiga.ac.id/9231
http://e-repository.perpus.iainsalatiga.ac.id/8822