Anxiety as a nondirectional drive: A test of Hull-Spence theoryhttps://www.upress.umn.edu/test-division/bibliography/1960-1969/1963/bernstein_anxiety_1963https://www.upress.umn.edu/logo.png
A.S. Bernstein
(1963)
Anxiety as a nondirectional drive: A test of Hull-Spence theory