Hopper, A. (1969). basic statistical quality control. McGraw Hill.
Chicago-čujuhus (17. p.)Hopper, A. Basic Statistical Quality Control. New York: McGraw Hill, 1969.
MLA-čujuhus (9. p.)Hopper, A. Basic Statistical Quality Control. McGraw Hill, 1969.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.