Cita APA

Sigelman, C. K., & Rider, A. E. (2006). Life-span Human development (5th ed.). California: Thomson.

Chicago Style Citation

Sigelman, C. K., i A. E. Rider. Life-span Human Development. 5th ed. California: Thomson, 2006.

Cita MLA

Sigelman, C. K., i A. E. Rider. Life-span Human Development. 5th ed. California: Thomson, 2006.