Cita APA (7th ed.)

Feldman, R. S. (2003). Development across the life span (3ed.). Prentice Halll.

Cita Chicago (17th ed.)

Feldman, Robert. S. Development Across the Life Span. 3ed. Upper Saddle River: Prentice Halll, 2003.

Cita MLA (9th ed.)

Feldman, Robert. S. Development Across the Life Span. 3ed. Prentice Halll, 2003.