1. Allen, M. J. & Yen, W. M. (1979). Introduction to measurement theory. Monterey, CA: BrooksiCole.
2. California Test Bureau. (1957). California Achievement Tests. Los Angeles: Author.
3. Crocker, L. & Algina, J. (1986). Introduction to classical and modern test theory. New York: CBS College Publishing.
4. CTBiMcGraw-Hill. (1979). California Achievement Tests Forms C and D technical report. Monterey, CA: Author.
5. CTBiMcGraw-Hill. (1987). California Achievement Tests Forms E and F technical report. Monterey, CA: Author.