Vieira-Santos, J. e Souza, C.B.A. de 2007. Categorization of verbalizations of the therapeutic process and the intraverbal operant. Revista Brasileira de Terapia Comportamental e Cognitiva. 9, 2 (jul. 2007), 91–104. DOI:https://doi.org/10.31505/rbtcc.v9i2.243.