Cita APA (7th ed.)

Birren, J. E. (1981). Developmental psychology, a life-span approach. Houghton Mifflin.

Cita Chicago (17th ed.)

Birren, James E. Developmental Psychology, a Life-span Approach. Boston: Houghton Mifflin, 1981.

Cita MLA (9th ed.)

Birren, James E. Developmental Psychology, a Life-span Approach. Houghton Mifflin, 1981.