http://e-repository.perpus.iainsalatiga.ac.id/19477
http://e-repository.perpus.iainsalatiga.ac.id/19941
http://e-repository.perpus.iainsalatiga.ac.id/19979
http://e-repository.perpus.iainsalatiga.ac.id/19792
http://e-repository.perpus.iainsalatiga.ac.id/20386