http://e-repository.perpus.iainsalatiga.ac.id/19043
http://e-repository.perpus.iainsalatiga.ac.id/19368
http://e-repository.perpus.iainsalatiga.ac.id/19356
http://e-repository.perpus.iainsalatiga.ac.id/19357
http://e-repository.perpus.iainsalatiga.ac.id/19359
http://e-repository.perpus.iainsalatiga.ac.id/18280