BLAKE ROBERT R. (1986). EXECUTIVE ACHIEVEMENNT MAKING IT AT THE TOP. MCGRAW-HILL.
Chicago-čujuhus (17. p.)BLAKE ROBERT R. EXECUTIVE ACHIEVEMENNT MAKING IT AT THE TOP. NEW YORK: MCGRAW-HILL, 1986.
MLA-čujuhus (9. p.)BLAKE ROBERT R. EXECUTIVE ACHIEVEMENNT MAKING IT AT THE TOP. MCGRAW-HILL, 1986.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.