http://e-repository.perpus.iainsalatiga.ac.id/11049
http://e-repository.perpus.iainsalatiga.ac.id/10839
http://e-repository.perpus.iainsalatiga.ac.id/11029
http://e-repository.perpus.iainsalatiga.ac.id/11235
http://e-repository.perpus.iainsalatiga.ac.id/12198