1. Learned helplessness : a theory for the age of personal control. --
Peterson, Christopher, 1950-
New York, NY, Estados Unidos : Oxford University Press, c1993.
155.232 P485
Peterson, Christopher, 1950-
New York, NY, Estados Unidos : Oxford University Press, c1993.
155.232 P485
2. Learned optimism : how to change your mind and your life / Martin E.P. Seligman.--
Seligman, Martin E. P.
New York, NY, Estados Unidos : Vintage Books, 2006.
155.232 S465
Seligman, Martin E. P.
New York, NY, Estados Unidos : Vintage Books, 2006.
155.232 S465
