Flanagan, D. P., & Ortiz, S. (2001).Essentials of cross-battery assessment-2nd Edition. New York: John Wiley. [Note - although devoted to CB assessment, this book provides information on expert- consensus- based/logical/rational classifications of WJ III tests, which is a form of content validity evidence].  (click to link to Amazon.com)

Flanagan, D. P., Ortiz, S. O., Alfonso, V. C., & Mascolo, J. T. (2002). The achievement test desk reference (ATDR)-2nd Edition. Boston: Allyn & Bacon. [Note - this book provides information on expert- consensus-   based/logical/rational classifications of WJ III achievement tests, which is a form of content validity evidence].  (click to link to Amazon.com)