Medland, L., Delgado, A.,  Carballés-Bretón, A., Maiques-Diaz, A., Díaz Muñoz, L., Marín-Rodríguez, M., Chamorro-Ortiz, P., Casado-Cid, B. & 
Jimenez-Aceituno, A., 
2015, 
Across the Spectrum: Resources for Environmental Educators. Monroe, M. C. & Krasny, M. E. (Hrsg.). 
3rd Aufl. North American Association for Environmental Education, 
S. 281-297 17 S.Publikation: Beiträge in Sammelwerken › Kapitel