APA-referens

Environmental protection agency documents and publications. Greenbelt, Maryland: Federal Information & News Dispatch.

Chicago-stil citat

Environmental Protection Agency Documents and Publications. Greenbelt, Maryland: Federal Information & News Dispatch.

MLA-referens

Environmental Protection Agency Documents and Publications. Greenbelt, Maryland: Federal Information & News Dispatch.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.