Cita APA (7a ed.)

Caryk, C. J., & Walker, J. L. (1986). Optimism and irrational beliefs. [s.n.].

Cita Chicago Style (17a ed.)

Caryk, Candis J., y James L. Walker. Optimism and Irrational Beliefs. [S.l.]: [s.n.], 1986.

Cita MLA (9a ed.)

Caryk, Candis J., y James L. Walker. Optimism and Irrational Beliefs. [s.n.], 1986.