Cole, M., & Cole, S. (1993). The development of children (2nd ed.). distributed by W.H. Freeman.
Cita Chicago (17th ed.)Cole, Michael, i Sheila Cole. The Development of Children. 2nd ed. New York :bScientific American Books: distributed by W.H. Freeman, 1993.
Cita MLA (9th ed.)Cole, Michael, i Sheila Cole. The Development of Children. 2nd ed. distributed by W.H. Freeman, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.