1. Abramson, L.Y., Alloy, L.B., Hankin, B.L., Clements, C.M., Zhu, L., Hogan, M.E. & Whitehouse, W.G. (2000). Optimistic cognitive styles and invulnerability to depression. In Gillham, J.E. (Ed.), The science of optimism and hope: Research essays in honor of Martin E.P. Seligman (pp. 75-98). Radnor, PA: Templeton Foundation Press.
2. Longitudinal Effects of Hope on Depression and Anxiety: A Latent Variable Analysis
3. Averill, J.R. (1994). The eyes of the beholder. In P. Ekman & R.J. Davidson (Eds.), The nature of emotion (pp. 7-14). New York: Oxford University Press.
4. Rules of Hope