LOTH, Chrismi-Rinda; STEENKAMP, Joan-Marié; DU PLESSIS, Theodorus. Manual for multilingual signs: Handleiding vir meertalige tekens. [s.l.] : UJ Press,2013. DOI: 10.18820/9781920382506. Disponível em: https://ujonlinepress.uj.ac.za/index.php/ujp/catalog/book/101. Acesso em: 17 apr. 2026.