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Lua i Stíl Chicago (17ú heag.)Ray, S. The North -south Economics: The Growth Divide of the World. delhi: Prentice hall of India, 1993.
Lua MLA (9ú heag.)Ray, S. The North -south Economics: The Growth Divide of the World. Prentice hall of India, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.