Holt, R. (1966). The political basis of eco. development. D.Van Nostrand.
Lua i Stíl Chicago (17ú heag.)Holt, R. The Political Basis of Eco. Development. Princeton: D.Van Nostrand, 1966.
Lua MLA (9ú heag.)Holt, R. The Political Basis of Eco. Development. D.Van Nostrand, 1966.
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