United States. Environmental Protection Agency. (2007). 2007 comprehensive procurement guidelines. EPA.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. 2007 Comprehensive Procurement Guidelines. [Washington, D.C.]: EPA, 2007.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. 2007 Comprehensive Procurement Guidelines. EPA, 2007.
Warning: These citations may not always be 100% accurate.