ECONOMIST INTELLIGENCE UNIT. (1999). BEST PRACTICES ENVIRONMENT. UNIVERSITY PRESS.
Chicago-čujuhus (17. p.)ECONOMIST INTELLIGENCE UNIT. BEST PRACTICES ENVIRONMENT. NEW DELHI: UNIVERSITY PRESS, 1999.
MLA-čujuhus (9. p.)ECONOMIST INTELLIGENCE UNIT. BEST PRACTICES ENVIRONMENT. UNIVERSITY PRESS, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.