http://e-repository.perpus.iainsalatiga.ac.id/17591
http://e-repository.perpus.iainsalatiga.ac.id/17270
http://e-repository.perpus.iainsalatiga.ac.id/17784
http://e-repository.perpus.iainsalatiga.ac.id/19997
http://e-repository.perpus.iainsalatiga.ac.id/20067