APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, & Williams, A. R. (2010). Federal energy management and government efficiency goals. Nova Science Publishers, Inc..

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, ба Amelia R. Williams. Federal Energy Management and Government Efficiency Goals. New York: Nova Science Publishers, Inc., 2010.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, ба Amelia R. Williams. Federal Energy Management and Government Efficiency Goals. Nova Science Publishers, Inc., 2010.