Cronbach, Lee J. (Subscribe)
Links
The Two Disciplines of Scientific Psychology
http://psychclassics.yorku.ca/Cronbach/Disciplines/
Text of Cronbach's seminal 1957 paper.
Construct Validity in Psychological Tests
http://psychclassics.yorku.ca/Cronbach/construct.htm
1955 paper authored by Cronbach and Paul E. Meehl.