Calderón, S., R. Rincón, A. Araujo, and C. Gantiva. “Effect of Congruence Between Sound and Video on Heart Rate and Self-Reported Measures of Emotion”. Europe’s Journal of Psychology, Vol. 14, no. 3, Aug. 2018, pp. 621-3, doi:10.5964/ejop.v14i3.1593.