http://e-repository.perpus.iainsalatiga.ac.id/10290/
http://e-repository.perpus.iainsalatiga.ac.id/11068
http://e-repository.perpus.iainsalatiga.ac.id/10856
http://e-repository.perpus.iainsalatiga.ac.id/11873
http://e-repository.perpus.iainsalatiga.ac.id/11982
http://e-repository.perpus.iainsalatiga.ac.id/12288