Johnson, P. .. a. (2011). Business Economics - I. Manan Prakashan.
Chicago-čujuhus (17. p.)Johnson, P.A ...[et al.]. Business Economics - I. Mumbai: Manan Prakashan, 2011.
MLA-čujuhus (9. p.)Johnson, P.A ...[et al.]. Business Economics - I. Manan Prakashan, 2011.
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