http://e-repository.perpus.iainsalatiga.ac.id/13941
http://e-repository.perpus.iainsalatiga.ac.id/12002
http://e-repository.perpus.iainsalatiga.ac.id/13138
http://e-repository.perpus.iainsalatiga.ac.id/12672
http://e-repository.perpus.iainsalatiga.ac.id/11809