APA-viite (7. p.)
EPA journal / United States Environmental Protection Agency, Office of Public Awareness [Epa J] NLMUID: 9426499.
Chicago-viite (17. p.)
EPA Journal / United States Environmental Protection Agency, Office of Public Awareness [Epa J] NLMUID: 9426499.
MLA-viite (9. p.)
EPA Journal / United States Environmental Protection Agency, Office of Public Awareness [Epa J] NLMUID: 9426499.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.