Lloyd Gutteridge. (2012). IB Business and Management Study Guide: Oxford IB Diploma Program (Study Guide.). Oxford University Press.
Chicago-viite (17. p.)Lloyd Gutteridge. IB Business and Management Study Guide: Oxford IB Diploma Program. Study Guide. Oxford University Press, 2012.
MLA-viite (9. p.)Lloyd Gutteridge. IB Business and Management Study Guide: Oxford IB Diploma Program. Study Guide. Oxford University Press, 2012.
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