Ray, S. (1993). The North -south economics: The growth divide of the world. Prentice hall of India.
Chicago-viite (17. p.)Ray, S. The North -south Economics: The Growth Divide of the World. delhi: Prentice hall of India, 1993.
MLA-viite (9. p.)Ray, S. The North -south Economics: The Growth Divide of the World. Prentice hall of India, 1993.
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