Malca C., Nora. “Contribution of Urban Green Areas to the Environmental Quality of the District of Comas- Lima, Year 2011”. Revista Del Instituto De investigación De La Facultad De Minas, Metalurgia Y Ciencias geográficas, vol. 15, no. 30, Dec. 2012, pp. 117-21, https://doi.org/10.15381/iigeo.v15i30.4192.