http://e-repository.perpus.iainsalatiga.ac.id/15169
http://e-repository.perpus.iainsalatiga.ac.id/14975
http://e-repository.perpus.iainsalatiga.ac.id/15307
http://e-repository.perpus.iainsalatiga.ac.id/11577
http://e-repository.perpus.iainsalatiga.ac.id/13789