Cita APA (7a ed.)

Schwarz, N. ([1990]). Rating scales: Numeric values may change the meaning of scale labels. ZUMA-Arbeitsbericht.

Cita Chicago Style (17a ed.)

Schwarz, Norbert. "Rating Scales: Numeric Values May Change the Meaning of Scale Labels." ZUMA-Arbeitsbericht [1990].

Cita MLA (9a ed.)

Schwarz, Norbert. "Rating Scales: Numeric Values May Change the Meaning of Scale Labels." ZUMA-Arbeitsbericht, [1990].