Wood, Cristina Mae, et al. “A Multi-Factor Model of Panic Disorder: Results of a Preliminary Study Integrating the Role of Perfectionism, Stress, Physiological Anxiety and Anxiety Sensitivity”. Anales De Psicología Annals of Psychology, vol. 31, no. 2, Apr. 2015, pp. 481-7, doi:10.6018/analesps.31.2.184241.