Cita APA (7th ed.)
Keenan, T., & Evans, S. (2009). An introduction to child development (2nd ed.). Sage.
Cita Chicago (17th ed.)
Keenan, Thomas, i Subhadra Evans. An Introduction to Child Development. 2nd ed. Los Angeles :London: Sage, 2009.
Cita MLA (9th ed.)
Keenan, Thomas, i Subhadra Evans. An Introduction to Child Development. 2nd ed. Sage, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.