Zhaoda, Zheng. “Survey on Satisfaction With Primary School After-School Services and Optimization Strategies Based on the CCSI Model——A Case Study of Y Education Group in City C, Province H”. Communication & Education Review, vol. 6, no. 5, Aug. 2025, pp. 83-90, https://masonpublish.org/index.php/the-communication-education-revi/article/view/859.