APA (7th ed.) Citation

United States. Environmental Protection Agency. Regional laboratory system: Annual report. U.S. Environmental Protection Agency.

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Regional Laboratory System: Annual Report. [Washington, D.C.?]: U.S. Environmental Protection Agency.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Regional Laboratory System: Annual Report. U.S. Environmental Protection Agency.

Warning: These citations may not always be 100% accurate.