http://e-repository.perpus.iainsalatiga.ac.id/18898
http://e-repository.perpus.iainsalatiga.ac.id/18828
http://e-repository.perpus.iainsalatiga.ac.id/17932
http://e-repository.perpus.iainsalatiga.ac.id/19325
http://e-repository.perpus.iainsalatiga.ac.id/18997