http://e-repository.perpus.iainsalatiga.ac.id/15179
http://e-repository.perpus.iainsalatiga.ac.id/15111
http://e-repository.perpus.iainsalatiga.ac.id/18188
http://e-repository.perpus.iainsalatiga.ac.id/15292
http://e-repository.perpus.iainsalatiga.ac.id/15293