Παραπομπή σε μορφή APA (7η εκδ.)

Crain, W. C. (2000). Theories of development: Concepts and applications (4th ed.). Prentice Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Crain, William C. Theories of Development: Concepts and Applications. 4th ed. Uppder Saddle River, N.J: Prentice Hall, 2000.

Παραπομπή σε μορφή MLA (9th εκδ.)

Crain, William C. Theories of Development: Concepts and Applications. 4th ed. Prentice Hall, 2000.