Obrien, D. (2006). The penguin CNBC-TV 18 business yearbook 2006-07. penguin.
Chicago-čujuhus (17. p.)Obrien, Derek. The Penguin CNBC-TV 18 Business Yearbook 2006-07. New Delhi: penguin, 2006.
MLA-čujuhus (9. p.)Obrien, Derek. The Penguin CNBC-TV 18 Business Yearbook 2006-07. penguin, 2006.
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