COCHRAN, W. G. (1963). Sampling techniques; 2nd ed (2nd ed.). John wiley.
Chicago-čujuhus (17. p.)COCHRAN, William G. Sampling Techniques; 2nd Ed. 2nd ed. New York: John wiley, 1963.
MLA-čujuhus (9. p.)COCHRAN, William G. Sampling Techniques; 2nd Ed. 2nd ed. John wiley, 1963.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.