Cita APA (7a ed.)

Velleman, P. F., & Wilkinson, L. (1994). Nominal, Ordinal, Interval and Ratio Typologies are Misleading. Trends and perspectives in empirical social research, 161-293.

Cita Chicago Style (17a ed.)

Velleman, Paul F., y Leland Wilkinson. "Nominal, Ordinal, Interval and Ratio Typologies Are Misleading." Trends and Perspectives in Empirical Social Research 1994: 161-293.

Cita MLA (8a ed.)

Velleman, Paul F., y Leland Wilkinson. "Nominal, Ordinal, Interval and Ratio Typologies Are Misleading." Trends and Perspectives in Empirical Social Research, 1994, pp. 161-293.