Cita APA (7a ed.)

Fry, P. S., & Debats, D. L. (2002). Self-efficacy beliefs as predictors of loneliness and psychological distress in older adults. [s.n.].

Cita Chicago Style (17a ed.)

Fry, Prem S., y Dominique L. Debats. Self-efficacy Beliefs as Predictors of Loneliness and Psychological Distress in Older Adults. [S.l.]: [s.n.], 2002.

Cita MLA (9a ed.)

Fry, Prem S., y Dominique L. Debats. Self-efficacy Beliefs as Predictors of Loneliness and Psychological Distress in Older Adults. [s.n.], 2002.