Enzer, S. (1971). Cross-impact techniques in technology assessment. Institute for the Future.
芝加哥风格引文Enzer, Selwyn. Cross-impact Techniques in Technology Assessment. Middletown, Conn.: Institute for the Future, 1971.
MLA引文Enzer, Selwyn. Cross-impact Techniques in Technology Assessment. Institute for the Future, 1971.
警告：这些引文格式不一定是100％准确.