(2001). Research and development expenditure in industry 1987-1999. OECD.
芝加哥风格引文Research and Development Expenditure in Industry 1987-1999. Paris, Cedex, France: OECD, 2001.
MLA引文Research and Development Expenditure in Industry 1987-1999. OECD, 2001.
警告：这些引文格式不一定是100％准确.