http://e-repository.perpus.iainsalatiga.ac.id/12273
http://e-repository.perpus.iainsalatiga.ac.id/12261
http://e-repository.perpus.iainsalatiga.ac.id/12977
http://e-repository.perpus.iainsalatiga.ac.id/13101
http://e-repository.perpus.iainsalatiga.ac.id/13184