http://e-repository.perpus.iainsalatiga.ac.id/16097
http://e-repository.perpus.iainsalatiga.ac.id/13185
http://e-repository.perpus.iainsalatiga.ac.id/13777
http://e-repository.perpus.iainsalatiga.ac.id/14454
http://e-repository.perpus.iainsalatiga.ac.id/13824