Sudo, C.H., Soares, P.G., Souza, S.R. de and Haydu, V.B. 2008. Stimulus equivalence and the use of games to teach writing and reading. Brazilian Journal of Behavioral and Cognitive Therapy. 10, 2 (Dec. 2008), 223–238. DOI:https://doi.org/10.31505/rbtcc.v10i2.228.