http://e-repository.perpus.iainsalatiga.ac.id/17539
http://e-repository.perpus.iainsalatiga.ac.id/17554
http://e-repository.perpus.iainsalatiga.ac.id/17835
http://e-repository.perpus.iainsalatiga.ac.id/17495
http://e-repository.perpus.iainsalatiga.ac.id/17831