Calvo Benzies, Y. J. “Using WhatsApp in Tourism ESP Classes: A Linguistic Analysis of the Language Used, and Grammatical Mistakes Made”. HUMAN REVIEW. International Humanities Review / Revista Internacional De Humanidades, vol. 12, no. 5, Dec. 2022, pp. 1-21, https://historicoeagora.net/revHUMAN/article/view/3973.