ebrary, Inc, & Williams, A. R. (2010). Federal energy management and government efficiency goals. Nova Science Publishers, Inc..
芝加哥风格引文ebrary, Inc, 与 Amelia R. Williams. Federal Energy Management and Government Efficiency Goals. New York: Nova Science Publishers, Inc., 2010.
MLA引文ebrary, Inc, 与 Amelia R. Williams. Federal Energy Management and Government Efficiency Goals. Nova Science Publishers, Inc., 2010.
警告：这些引文格式不一定是100％准确.