APA (7th ed.) Zitazioa

Crain, W. C. (1985). Theories of development: Concepts and applications (2a. ed.). Prentice Hall International.

Chicago Style (17th ed.) Zitazioa

Crain, William C. Theories of Development: Concepts and Applications. 2a. ed. Londres: Prentice Hall International, 1985.

MLA (9th ed.) Zitazioa

Crain, William C. Theories of Development: Concepts and Applications. 2a. ed. Prentice Hall International, 1985.