APA-referens (7:e uppl.)

Sigelman, C. K. (2018). Life-span human development (9th ed.). Cengage Learning.

Chicago-referens (17:e uppl.)

Sigelman, Carol K. Life-span Human Development. 9th ed. Boston, MA: Cengage Learning, 2018.

MLA-referens (9:e uppl.)

Sigelman, Carol K. Life-span Human Development. 9th ed. Cengage Learning, 2018.