Loth, Chrismi-Rinda, Joan-Marié Steenkamp, and Theodorus du Plessis. Manual for Multilingual Signs: Handleiding Vir Meertalige Tekens. UJ Press, 2013. Accessed April 17, 2026. https://ujonlinepress.uj.ac.za/index.php/ujp/catalog/book/101.