CRUZ-MORALES, S.E., GONZÁLEZ-REYES, M.R., GÓMEZ-ROMERO, J.G. and ARRIAGA RAMÍREZ, J.C.P. 2011. Anxiety models. Mexican Journal of Behavior Analysis. 29, 1 (Jan. 2011), 93–105. DOI:https://doi.org/10.5514/rmac.v29.i1.23518.