Cita APA (7th ed.)
Crain, W. C. (2011). Theories of development: Concepts and applications (6th ed.). Prentice Hall.
Cita Chicago (17th ed.)
Crain, William C. Theories of Development: Concepts and Applications. 6th ed. Boston, MA: Prentice Hall, 2011.
Cita MLA (9th ed.)
Crain, William C. Theories of Development: Concepts and Applications. 6th ed. Prentice Hall, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.