Michael, V. (2000). Business Policy and Environment (2nd.).
Chicago-čujuhus (17. p.)Michael, V. Business Policy and Environment. 2nd. New Delhi, 2000.
MLA-čujuhus (9. p.)Michael, V. Business Policy and Environment. 2nd. 2000.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.