Berk, L. E. (1999). Infants, children, and adolescents (3rd ed.). Allyn and Bacon.
Chicago Style (17th ed.) ZitazioaBerk, Laura E. Infants, Children, and Adolescents. 3rd ed. Boston: Allyn and Bacon, 1999.
MLA (9th ed.) ZitazioaBerk, Laura E. Infants, Children, and Adolescents. 3rd ed. Allyn and Bacon, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.