HARDY LEN. (1987). SUCCESSFUL BUSINESS STRATEGY HOW TO WIN IN THE MARKET PLACE. KOGAN PAGE.
Chicago-čujuhus (17. p.)HARDY LEN. SUCCESSFUL BUSINESS STRATEGY HOW TO WIN IN THE MARKET PLACE. LONDON: KOGAN PAGE, 1987.
MLA-čujuhus (9. p.)HARDY LEN. SUCCESSFUL BUSINESS STRATEGY HOW TO WIN IN THE MARKET PLACE. KOGAN PAGE, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.