Roszkowski, M. E. (2011). Business Law: Principles, cases and policy seventh edition. West Publishing.
Chicago-viite (17. p.)Roszkowski, Mark E. Business Law: Principles, Cases and Policy Seventh Edition. West Publishing, 2011.
MLA-viite (8. p.)Roszkowski, Mark E. Business Law: Principles, Cases and Policy Seventh Edition. West Publishing, 2011.
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