Bustos Díaz, Javier, and Francisco Javier Ruiz del Olmo. “Sources Certified to the Fake News.The Case of Facebook, Google and Microsoft Against Disinformation During Covid-19”. Journal of Learning Styles 13, no. 26 (October 6, 2020): 7–18. Accessed July 28, 2026. https://revistaestilosdeaprendizaje.com/estilosdeaprendizaje/article/view/2158.