Cochran, W. G. (1963). Sampling techniques (2a. ed.). John Wiley & Sons.
Chicago-čujuhus (17. p.)Cochran, William Gemmell. Sampling Techniques. 2a. ed. Nueva York: John Wiley & Sons, 1963.
MLA-čujuhus (9. p.)Cochran, William Gemmell. Sampling Techniques. 2a. ed. John Wiley & Sons, 1963.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.