Cita APA (7a ed.)

Friedman, H. H. (1988). The effects of positive and negative wording on responses to a Likert scale. [s.n.].

Cita Chicago Style (17a ed.)

Friedman, Hershey H. The Effects of Positive and Negative Wording on Responses to a Likert Scale. [S.l.]: [s.n.], 1988.

Cita MLA (9a ed.)

Friedman, Hershey H. The Effects of Positive and Negative Wording on Responses to a Likert Scale. [s.n.], 1988.