Hänvisningar gällande denna post

APA-referens (7:e uppl.)
National Research Council (U.S.). Committee on Environmental Epidemiology & ebrary, Inc. (1997). Use of gray literature and other data in environmental epidemiology. National Academy of Sciences.
Chicago-referens (17:e uppl.)
National Research Council (U.S.). Committee on Environmental Epidemiology och Inc ebrary. Use of Gray Literature and Other Data in Environmental Epidemiology. Washington, D.C.: National Academy of Sciences, 1997.
MLA-referens (9:e uppl.)
National Research Council (U.S.). Committee on Environmental Epidemiology och Inc ebrary. Use of Gray Literature and Other Data in Environmental Epidemiology. National Academy of Sciences, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.