HARWOOD GORDON B. (1979). SELF REVIEW IN QUANTITATIVE METHODS (2ND.). RICHARD D.IRWIN INC.
Chicago-čujuhus (17. p.)HARWOOD GORDON B. SELF REVIEW IN QUANTITATIVE METHODS. 2ND. ILLIONS: RICHARD D.IRWIN INC, 1979.
MLA-čujuhus (9. p.)HARWOOD GORDON B. SELF REVIEW IN QUANTITATIVE METHODS. 2ND. RICHARD D.IRWIN INC, 1979.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.