Cita APA (7th ed.)
Taylor, C. S. (2013). Validity and validation. Oxford University Press.
Cita Chicago (17th ed.)
Taylor, Catherine S. Validity and Validation. Oxford: Oxford University Press, 2013.
Cita MLA (9th ed.)
Taylor, Catherine S. Validity and Validation. Oxford University Press, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.