Chen , Q., Y. . Witayapayungkul, and N. . Tasnaina. “Developing the Calisthenics Exercise Program to Improve Physical Fitness of the Primary School Students”. International Journal of Sociologies and Anthropologies Science Reviews, vol. 5, no. 2, Mar. 2025, pp. 215-24, doi:10.60027/ijsasr.2025.5563.