APA
ray s., . (1983). economics of third world. new delhi: printice hall of india private ltd.
Chicago
ray s.k, . 1983. economics of third world. new delhi: printice hall of india private ltd.
Harvard
ray s., . (1983). economics of third world. new delhi: printice hall of india private ltd.
MLA
ray s.k, . economics of third world. new delhi: printice hall of india private ltd. 1983.
