APA (7e ed.) Bronvermelding

Sigelman, C. K., & Rider, E. A. (2009). Life-span human development (6th ed.). Wadsworth Cengage Learning.

Chicago (17e ed.) Bronvermelding

Sigelman, Carol K., en Elizabeth A. Rider. Life-span Human Development. 6th ed. Australia: Wadsworth Cengage Learning, 2009.

MLA (9e ed.) Bronvermelding

Sigelman, Carol K., en Elizabeth A. Rider. Life-span Human Development. 6th ed. Wadsworth Cengage Learning, 2009.