Cita APA (7th ed.)

Bloom, M. (1980). Life span development: Bases for preventive and interventive helping. Macmillan.

Cita Chicago (17th ed.)

Bloom, Martin. Life Span Development: Bases for Preventive and Interventive Helping. New York: Macmillan, 1980.

Cita MLA (9th ed.)

Bloom, Martin. Life Span Development: Bases for Preventive and Interventive Helping. Macmillan, 1980.