CHENGULA, D. H. Study on Performance of Road Signs and Markings along TANZAM Highway in Mbeya Region, Tanzania. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 39, n. 1, p. 34–50, 2018. Disponível em: https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8995. Acesso em: 3 may. 2024.