Lua APA (7ú heag.)
(2004). OECD Economic Surveys, 2004: United States. OECD.
Lua i Stíl Chicago (17ú heag.)
OECD Economic Surveys, 2004: United States. Paris Cedex, France: OECD, 2004.
Lua MLA (9ú heag.)
OECD Economic Surveys, 2004: United States. OECD, 2004.
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