Παραπομπή APA

Likert, R., & Hayes, S. P. (1957). Some applications of behavioral research. UNESCO.

Παραπομπή Chicago Style

Likert, Rensis, και Samuel P. Hayes. Some Applications of Behavioral Research. Paris: UNESCO, 1957.

Παραπομπή MLA

Likert, Rensis, και Samuel P. Hayes. Some Applications of Behavioral Research. UNESCO, 1957.