(1972). Performance contracting: Who profits most?
Chicago-čujuhus (17. p.)Performance Contracting: Who Profits Most? 1972.
MLA-čujuhus (9. p.)Performance Contracting: Who Profits Most? 1972.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.