Chacón-Ramírez, Nancy, et al. , translators. “The Use of Educational Chemistry Resources for Students in Academic Daytime Secondary Schools of San Jose School Districts 09 and 11, Costa Rica”. Revista Electrónica Educare, vol. 20, no. 3, Sept. 2016, pp. 1-24, https://doi.org/10.15359/ree.20-3.2.