V. Amnouychokanant, S. Boonlue, S. Chuathong, and K. Thamwipat, “Online Learning Using Block-based Programming to Foster Computational Thinking Abilities during the COVID-19 Pandemic”, Int. J. Emerg. Technol. Learn., vol. 16, no. 13, pp. pp. 227–247, Jul. 2021.