Schneider, H., Vinke, J., & Weekes - Vagliani, W. (1993). Environmental education : =: L'education environnementale : an approach to sustainable development =: approaches pour un developpement durable. Paris: Organisation for Economic Co-operation and Development.
Παραπομπή Chicago StyleSchneider, Hartmut, Jacoline Vinke, and Winifred Weekes - Vagliani. Environmental Education : =: L'education Environnementale : An Approach to Sustainable Development =: Approaches Pour Un Developpement Durable. Paris: Organisation for Economic Co-operation and Development, 1993.
Παραπομπή MLASchneider, Hartmut, Jacoline Vinke, and Winifred Weekes - Vagliani. Environmental Education : =: L'education Environnementale : An Approach to Sustainable Development =: Approaches Pour Un Developpement Durable. Paris: Organisation for Economic Co-operation and Development, 1993.