Free, M. N., Ryan, J. M., & Hess, R. K. (1991). Handbook of statistical procedures and their computer applications to education and the behavioral sciences. American Council on Education.
Citace podle Chicago (17th ed.)Free, Melvyn N., Joseph M. Ryan, a Robert K. Hess. Handbook of Statistical Procedures and Their Computer Applications to Education and the Behavioral Sciences. New York: American Council on Education, 1991.
Citace podle MLA (9th ed.)Free, Melvyn N., et al. Handbook of Statistical Procedures and Their Computer Applications to Education and the Behavioral Sciences. American Council on Education, 1991.
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