Lua APA (7ú heag.)
(2000). Research and development expenditure in industry 1977-1998 (2000 edition.). OECD.
Lua i Stíl Chicago (17ú heag.)
Research and Development Expenditure in Industry 1977-1998. 2000 edition. Paris, Cedex, France: OECD, 2000.
Lua MLA (9ú heag.)
Research and Development Expenditure in Industry 1977-1998. 2000 edition. OECD, 2000.
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