Aziz, Umar Abdul, and Ibnu Sholeh. “Evaluasi Kinerja Simpang Tak Bersinyal Simpang Lusani Dan Simpang Bank Jateng Purworejo Jawa Tengah”. Prosiding University Research Colloquium, Feb. 2018, pp. 39-52, https://repository.urecol.org/index.php/proceeding/article/view/12.