http://e-repository.perpus.iainsalatiga.ac.id/19077
http://e-repository.perpus.iainsalatiga.ac.id/19145
http://e-repository.perpus.iainsalatiga.ac.id/19028
http://e-repository.perpus.iainsalatiga.ac.id/19125
http://e-repository.perpus.iainsalatiga.ac.id/18531