Lei, Cancan, and Xuebo Zhu. “Study on the Quality Assurance System of After-School Service for Primary and Secondary Schools in the Context of ‘Double Reduction’: Based on Total Quality Management Theory”. International Journal of Education and Humanities, vol. 7, no. 3, Mar. 2023, pp. 62-68, https://doi.org/10.54097/ijeh.v7i3.6001.