Cita APA (7a ed.)

Jarvik, L. F., & Blum, J. E. (1971). Cognitive declines as predictors of mortality in twin pairs: A twenty-year longitudinal study of aging. [s.n.].

Cita Chicago Style (17a ed.)

Jarvik, Lissy F., y June E. Blum. Cognitive Declines as Predictors of Mortality in Twin Pairs: A Twenty-year Longitudinal Study of Aging. [S.l.]: [s.n.], 1971.

Cita MLA (9a ed.)

Jarvik, Lissy F., y June E. Blum. Cognitive Declines as Predictors of Mortality in Twin Pairs: A Twenty-year Longitudinal Study of Aging. [s.n.], 1971.