NIE NICHOLSON, R. (1969). Economic statistics and economic problems. McGraw-Hill.
Chicago-čujuhus (17. p.)NIE NICHOLSON, R.J. Economic Statistics and Economic Problems. London: McGraw-Hill, 1969.
MLA-čujuhus (9. p.)NIE NICHOLSON, R.J. Economic Statistics and Economic Problems. McGraw-Hill, 1969.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.