Não informado. (1941). Educational and Psychological Measurement. Educational and Psychological Measurement.
Chicago-referens (17:e uppl.)Não informado. Educational and Psychological Measurement. Durham, NC: Educational and Psychological Measurement, 1941.
MLA-referens (8:e uppl.)Não informado. Educational and Psychological Measurement. Educational and Psychological Measurement, 1941.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.