1. Erfolgreich oder ruinös? Transnationale unternehmen und nachhaltige entwicklung–kritische reflexion aus menschenrechtlicher perspektive;Reidel,2003
2. Freizeitwissenschaft. Handbuch für Pädagogik, Management und Nachhaltige Entwicklung;Freericks,2010
3. Environmental Comfort Indicators for School Buildings in Sustainability Assessment Tools
4. Effectiveness of E-Learning for Students Vocational High School Building Engineering Program;Soeparno and Muslim,2018
5. Energy performance of the vocational high school building for the convenience of thermal and lighting comfort in Medan. American Institute of Physics Human-Dedicated Sustainable Product and Process Design: Materials, Resources, and Energy;Alfianto,1977