A Computer Program for Calculating the Power of F Tests in Analysis of Variance and Covariance for Specified Alpha Levels,Sample Sizes,and Effect Sizes

Cohen, J. Statistical power analysis for the behavioral sciences. New York: Academic Press, 1969.

Laubscher, N. F. Normalizing the noncentral t and F distributions. Annals of Mathematical Statistics, 1960, 31, 1105-1112.