Psychological studies. Vol. I. Research in psychodiagnostics.https://www.upress.umn.edu/test-division/bibliography/1960-1969/1961/barendregt_psychological_1961https://www.upress.umn.edu/logo.png
J.T. Barendregt
(1961)
Psychological studies. Vol. I. Research in psychodiagnostics.