Cita APA (7th ed.)
Cool, G., & Cook, J. L. (2010). The world of children (2nd ed.). Allyn & Bacon.
Cita Chicago (17th ed.)
Cool, Greg, i Joan Littlefield Cook. The World of Children. 2nd ed. Boston: Allyn & Bacon, 2010.
Cita MLA (9th ed.)
Cool, Greg, i Joan Littlefield Cook. The World of Children. 2nd ed. Allyn & Bacon, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.