A. L. de A. L. Coelho, H. C. C. dos Santos, A. W. P. da Silva, C. Coelho, and B. N. F. Oliveira, “Sustainable watercolor: representative images of the conception of sustainability based on drawings by children and adolescents from João Pessoa”, ReA UFSM, vol. 11, pp. 858–880, Dec. 2018.