(1997). The Business Environment: Challenges And Changes / Ian Brooks. Prentice-Hall.
Čikaški stil citiranja (17. izdanje)The Business Environment: Challenges And Changes / Ian Brooks. Prentice-Hall, 1997.
MLA način citiranja (8. izdanje)The Business Environment: Challenges And Changes / Ian Brooks. Prentice-Hall, 1997.
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