Cita APA (7a ed.)

Solomon, K. (1990). Learned helplessness in the elderly: Theoretic and clinical considerations. [s.n.].

Cita Chicago Style (17a ed.)

Solomon, Kenneth. Learned Helplessness in the Elderly: Theoretic and Clinical Considerations. [S.l.]: [s.n.], 1990.

Cita MLA (9a ed.)

Solomon, Kenneth. Learned Helplessness in the Elderly: Theoretic and Clinical Considerations. [s.n.], 1990.