Lua APA (7ú heag.)

Não informado. (1975). Economic Review. People's Bank, Research Department.

Lua i Stíl Chicago (17ú heag.)

Não informado. Economic Review. Colombo: People's Bank, Research Department, 1975.

Lua MLA (8ú heag.)

Não informado. Economic Review. People's Bank, Research Department, 1975.

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