Keat Paul G. (2015). Managerial Economics (6th.). Pearson.
Lua i Stíl Chicago (17ú heag.)Keat Paul G. Managerial Economics. 6th. Noida: Pearson, 2015.
Lua MLA (9ú heag.)Keat Paul G. Managerial Economics. 6th. Pearson, 2015.
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