Cita APA (7th ed.)

Berk, L. E. (1997). Child development (4th.ed.). Allyn and Bacon.

Cita Chicago (17th ed.)

Berk, Laura E. Child Development. 4th.ed. Boston: Allyn and Bacon, 1997.

Cita MLA (9th ed.)

Berk, Laura E. Child Development. 4th.ed. Allyn and Bacon, 1997.