http://e-repository.perpus.iainsalatiga.ac.id/14617
http://e-repository.perpus.iainsalatiga.ac.id/17989
http://e-repository.perpus.iainsalatiga.ac.id/18742
http://e-repository.perpus.iainsalatiga.ac.id/18113
http://e-repository.perpus.iainsalatiga.ac.id/18571