http://e-repository.perpus.iainsalatiga.ac.id/19017
http://e-repository.perpus.iainsalatiga.ac.id/19020
http://e-repository.perpus.iainsalatiga.ac.id/19287
http://e-repository.perpus.iainsalatiga.ac.id/19260
http://e-repository.perpus.iainsalatiga.ac.id/19127