http://e-repository.perpus.iainsalatiga.ac.id/18828
http://e-repository.perpus.iainsalatiga.ac.id/18264
http://e-repository.perpus.iainsalatiga.ac.id/18812
http://e-repository.perpus.iainsalatiga.ac.id/18364
http://e-repository.perpus.iainsalatiga.ac.id/18808