http://e-repository.perpus.iainsalatiga.ac.id/13024
http://e-repository.perpus.iainsalatiga.ac.id/15602
http://e-repository.perpus.iainsalatiga.ac.id/17601
http://e-repository.perpus.iainsalatiga.ac.id/17025
http://e-repository.perpus.iainsalatiga.ac.id/18527