Ruben Gustavo Baylon-Chavagari, Farfán Pimentel Johnny Felix, Juan Méndez Vergaray,Edward Flores. “Environmental Education in Educational Institutions: A Theoretical Review”. Drugs and Cell Therapies in Hematology, vol. 10, no. 1, July 2021, pp. 694-1, http://www.dcth.org/index.php/journal/article/view/155.