http://e-repository.perpus.iainsalatiga.ac.id/15193
http://e-repository.perpus.iainsalatiga.ac.id/14725
http://e-repository.perpus.iainsalatiga.ac.id/13993
http://e-repository.perpus.iainsalatiga.ac.id/14438
http://e-repository.perpus.iainsalatiga.ac.id/14687