Thelwall, Mike. «Can Twitter Give Insights into International Differences in Covid-19 Vaccination? Eight Countries´ English Tweets to 21 March 2021». Profesional de la información 30, no. 3 (mayo 30, 2021). Accedido noviembre 23, 2024. https://revista.profesionaldelainformacion.com/index.php/EPI/article/view/86450.