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.