http://e-repository.perpus.iainsalatiga.ac.id/12228
http://e-repository.perpus.iainsalatiga.ac.id/12145
http://e-repository.perpus.iainsalatiga.ac.id/9325
http://e-repository.perpus.iainsalatiga.ac.id/9214
http://e-repository.perpus.iainsalatiga.ac.id/9259