Breiting, S. (2005). Quality criteria for ESD-Schools: Guidelines to enhance the quality of education for sustainable development. Vienna, Austria.
استشهاد بنمط شيكاغوBreiting, Soren. Quality Criteria for ESD-Schools: Guidelines to Enhance the Quality of Education for Sustainable Development. Vienna, Austria, 2005.
MLA استشهادBreiting, Soren. Quality Criteria for ESD-Schools: Guidelines to Enhance the Quality of Education for Sustainable Development. Vienna, Austria, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.