http://e-repository.perpus.iainsalatiga.ac.id/19024
http://e-repository.perpus.iainsalatiga.ac.id/18898
http://e-repository.perpus.iainsalatiga.ac.id/18990
http://e-repository.perpus.iainsalatiga.ac.id/13243
http://e-repository.perpus.iainsalatiga.ac.id/17932