Cita APA (7a ed.)

Neugarten, B. L. (1979). Time, age, and the life cycle. [s.n.].

Cita Chicago Style (17a ed.)

Neugarten, Bernice L. Time, Age, and the Life Cycle. [S.l.]: [s.n.], 1979.

Cita MLA (9a ed.)

Neugarten, Bernice L. Time, Age, and the Life Cycle. [s.n.], 1979.