Cita APA (7a ed.)

Sugarman, L. (1990). Life-span development: Concepts, theories and interventions. Routledge.

Cita Chicago Style (17a ed.)

Sugarman, Léonie. Life-span Development: Concepts, Theories and Interventions. London [etc.]: Routledge, 1990.

Cita MLA (9a ed.)

Sugarman, Léonie. Life-span Development: Concepts, Theories and Interventions. Routledge, 1990.