Alqurini, Haya Ali, and Najwa Atyan Al-Muhammadi. “Inclusion of Twenty-First Century Skills in the Books of Digital Skills for Fourth Elementary School in Saudi Arabia”. Journal of Educational and Psychological Sciences, vol. 8, no. 2, Feb. 2024, pp. 21-42, https://doi.org/10.26389/AJSRP.H020224.