Cita APA (7a ed.)

Maier, S. F., & Seligman, M. E. P. (1976). Learned helplessness: Theory and evidence. [s.n.].

Cita Chicago Style (17a ed.)

Maier, Steven F., y Martin E. P. Seligman. Learned Helplessness: Theory and Evidence. [S.l.]: [s.n.], 1976.

Cita MLA (9a ed.)

Maier, Steven F., y Martin E. P. Seligman. Learned Helplessness: Theory and Evidence. [s.n.], 1976.