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Lua i Stíl Chicago (17ú heag.)Gujarati, Damodar N; Porter. Basic Econometrics. 5th ed. New Delhi: McGraw Hill, 2012.
Lua MLA (9ú heag.)Gujarati, Damodar N; Porter. Basic Econometrics. 5th ed. McGraw Hill, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.