Cita APA (7th ed.)
Kail V. Robert & Rita Wicks- Nelson. (1993). Development Psychology (5th ed.). Prentice-Hall..
Cita Chicago (17th ed.)
Kail V. Robert i Rita Wicks- Nelson. Development Psychology. 5th ed. New Jersey: Prentice-Hall., 1993.
Cita MLA (9th ed.)
Kail V. Robert i Rita Wicks- Nelson. Development Psychology. 5th ed. Prentice-Hall., 1993.
Atenció: Aquestes cites poden no estar 100% correctes.