PIENAAR, C. Penguin Students’ Grammar of English, by R. Bosewitz. English Usage in Southern Africa, [S. l.], v. 20, n. 2, p. 83–86, 1989. Disponível em: https://unisapressjournals.co.za/index.php/EUSA/article/view/5150. Acesso em: 3 jul. 2024.