http://e-repository.perpus.iainsalatiga.ac.id/14280
http://e-repository.perpus.iainsalatiga.ac.id/13025
http://e-repository.perpus.iainsalatiga.ac.id/14413
http://e-repository.perpus.iainsalatiga.ac.id/16313
http://e-repository.perpus.iainsalatiga.ac.id/15410