http://e-repository.perpus.iainsalatiga.ac.id/14687
http://e-repository.perpus.iainsalatiga.ac.id/15241
http://e-repository.perpus.iainsalatiga.ac.id/15167
http://e-repository.perpus.iainsalatiga.ac.id/14975
http://e-repository.perpus.iainsalatiga.ac.id/14962