1. R. Harshbarger, “Learning in the 21st century: A study addressing educational trends and implications,” Doctoral dissertation, Univ of Central Florida, Florida, USA, 2016. [Online]. Available: https://stars.library.ucf.edu/etd/5043/
2. C. S. Amadi, “The integration of 21st-century skills in science: A Case Study of Canada and the USA,” Education and Urban Society, vol. 55, no. 1, pp. 56–87, Jan. 2023, doi: 10.1177/00131245211062531.
3. National Science Foundation (NSF), “Women, minorities, and persons with disabilities in science and engineering,”: 2019. [Online]. Available: https://ncses.nsf.gov/pubs/nsf19304/
4. J. H. McMillan, “The impact of high-stakes test results on teachers’ instructional,” 2005. [Online]. Available: https://eric.ed.gov/?id=ED490648
5. Partnership for 21st Century Skills, “21st century readiness for every student: A policymaker’s guide,” 2009, [Online], Available: http://www.p21.org