Torres Rivera, L. B.; Mesina Calderón, N.; Salamanca Salazar, B.; Sepúlveda Sepúlveda, C. Effect of the Interdisciplinary Teaching of Environmental Education on Knowledge, Values and Attitude of Junior High School Students (Los Ángeles City, Biobio Region, Chile). Rev. complut. educ 2015, 27 (3), 1139-1155. https://doi.org/10.5209/rev_RCED.2016.v27.n3.47551.