Hasnawati, and Eka Cahya Muliawati. “The Relationship Between Indoor Air Quality and Student Productivity in the Era of Hybrid Learning”. Sustainable Applied Modification Evidence Community 2, no. 2 (December 8, 2025): 32–42. Accessed December 21, 2025. https://gpijournal.com/index.php/samec/article/view/287.