http://e-repository.perpus.iainsalatiga.ac.id/10562
http://e-repository.perpus.iainsalatiga.ac.id/10650
http://e-repository.perpus.iainsalatiga.ac.id/10557
http://e-repository.perpus.iainsalatiga.ac.id/11390
http://e-repository.perpus.iainsalatiga.ac.id/11429