United States. Patent and Trademark Office. (1977). Technology assessment & forecast. United States Dept. of Commerce, Patent and Trademark Office.
芝加哥风格引文United States. Patent and Trademark Office. Technology Assessment & Forecast. Washington, D.C: United States Dept. of Commerce, Patent and Trademark Office, 1977.
MLA引文United States. Patent and Trademark Office. Technology Assessment & Forecast. United States Dept. of Commerce, Patent and Trademark Office, 1977.
警告：这些引文格式不一定是100％准确.