BETTS, Bisolu Sylvanus Hotchinson. The Impact of E-commerce on Sierra Leone Tourism Industry. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 69, n. 1, p. 73–88, 2020. Disponível em: https://asrjetsjournal.org/American_Scientific_Journal/article/view/5807. Acesso em: 13 sep. 2025.