APA-referens (7:e uppl.)
ebrary, Inc. (1999). Assessment of future scientific needs for live variola virus. National Academy Press.
Chicago-referens (17:e uppl.)
ebrary, Inc. Assessment of Future Scientific Needs for Live Variola Virus. Washington, D.C.: National Academy Press, 1999.
MLA-referens (9:e uppl.)
ebrary, Inc. Assessment of Future Scientific Needs for Live Variola Virus. National Academy Press, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.