Peterson, C., Maier, S. F., & Seligman, M. E. P. (1995). Learned helplessness: A theory for the age of personal control. Oxford University Press.
Citazione stile Chigago Style (17a edizione)Peterson, Christopher, Steven F. Maier, e Martin E. P. Seligman. Learned Helplessness: A Theory for the Age of Personal Control. New York: Oxford University Press, 1995.
Citatione MLA (9a ed.)Peterson, Christopher, et al. Learned Helplessness: A Theory for the Age of Personal Control. Oxford University Press, 1995.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.