Burt, D. (1997). A proactive handbook for managers. Jaico.
Chicago-čujuhus (17. p.)Burt, David. A Proactive Handbook for Managers. Mumbai: Jaico, 1997.
MLA-čujuhus (9. p.)Burt, David. A Proactive Handbook for Managers. Jaico, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.