Welkowitz, J., & Ewen, R. B. ,. (1971). Introductory statistics for the behavioral sciences. Academic Press.
Chicago-čujuhus (17. p.)Welkowitz, Joan, juo Robert B. ,Cohen Ewen. Introductory Statistics for the Behavioral Sciences. New York: Academic Press, 1971.
MLA-čujuhus (9. p.)Welkowitz, Joan, juo Robert B. ,Cohen Ewen. Introductory Statistics for the Behavioral Sciences. Academic Press, 1971.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.