Chacón-Ramírez, Nancy, Franklin Saborío-García, and Nidya Nova-Bustos , trans. “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 20, no. 3 (September 1, 2016): 1–24. Accessed May 3, 2024. https://www.revistas.una.ac.cr/index.php/EDUCARE/article/view/7111.