KAY JOHN. (1996). BUSINESS OF ECONOMICS. OXFORD UNIVERSITY PRESS.
Lua i Stíl Chicago (17ú heag.)KAY JOHN. BUSINESS OF ECONOMICS. OXFORD: OXFORD UNIVERSITY PRESS, 1996.
Lua MLA (9ú heag.)KAY JOHN. BUSINESS OF ECONOMICS. OXFORD UNIVERSITY PRESS, 1996.
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