Cita APA (7a ed.)

Fry, P. S. (1984). Positive and negative attributions of longevity: A cross-sectional study of the elderly from three socioeconomic conditions. [s.n.].

Cita Chicago Style (17a ed.)

Fry, Prem S. Positive and Negative Attributions of Longevity: A Cross-sectional Study of the Elderly from Three Socioeconomic Conditions. [S.l.]: [s.n.], 1984.

Cita MLA (9a ed.)

Fry, Prem S. Positive and Negative Attributions of Longevity: A Cross-sectional Study of the Elderly from Three Socioeconomic Conditions. [s.n.], 1984.