Sigelman, C. K., & Rider, E. A. (2009). Life-span human development (6th ed.). Thomson Cengage Learning.
Citazione stile Chigago Style (17a edizione)Sigelman, Carol K., e Elizabeth A. Rider. Life-span Human Development. 6th ed. Belmont, Calif: Thomson Cengage Learning, 2009.
Citatione MLA (9a ed.)Sigelman, Carol K., e Elizabeth A. Rider. Life-span Human Development. 6th ed. Thomson Cengage Learning, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.