Tohutoro APA (7th ed.)

Feldman, R. S. (1997). Development across the life span. Prentice hall.

Tohutoru Kātū Chicago (17th ed.)

Feldman, Robert S. Development Across the Life Span. New Jersey: Prentice hall, 1997.

Tohutoro MLA (9th ed.)

Feldman, Robert S. Development Across the Life Span. Prentice hall, 1997.