Niamsap, Natthanee. “New Office Design Principle for Human Welfare: Case Studies of Interior Environmental Design for Information Technology Business Companies in Bangkok that Effect Work Efficiency”. Journal of Public and Private Management 17, no. 1 (June 1, 2010): 75. accessed January 7, 2026. https://so03.tci-thaijo.org/index.php/ppmjournal/article/view/23943.