http://e-repository.perpus.iainsalatiga.ac.id/16007
http://e-repository.perpus.iainsalatiga.ac.id/14659
http://e-repository.perpus.iainsalatiga.ac.id/13645
http://e-repository.perpus.iainsalatiga.ac.id/13803
http://e-repository.perpus.iainsalatiga.ac.id/14001