International Organization for Standardization (2017). ISO 18233:2017. Retrieved from https://www.iso.org
"University of Queensland Lecture Theatre Design Standards" or "MIT Classroom Design Guidelines" – these are public university documents often available as direct PDFs. Example: lecture theatre design standards pdf
The Leadership in Energy and Environmental Design (LEED) certification program provides a framework for sustainable building design, including guidelines for energy efficiency, water conservation, and indoor air quality (USGBC 2020). International Organization for Standardization (2017)