DAVID PIPER. Is Murphy’s English Grammar In Use out of date?. Journal of English Language Teaching, Chennai, India, v. 60, n. 3, p. 10–14, 2018. DOI: 10.66121/e09n2n18. Disponível em: https://journals.eltai.in/jelt/article/view/JELT600303. Acesso em: 22 feb. 2026.