Li, Peng, and Srochinee Siriwattana. “Enhancing Sustainable Market Competitiveness through Innovation, Service Optimization, and Brand Management: The Mediating Role of Differentiation in Beijing’s Printing Industry”. International Journal of Development Administration Research 8, no. 2 (December 31, 2025): 218–228. accessed September 12, 2026. https://so02.tci-thaijo.org/index.php/ijdar/article/view/284349.