APA-referens (7:e uppl.)
ebrary, Inc. (1995). Ward Valley: An examination of seven issues in earth sciences and ecology. National Academy Press.
Chicago-referens (17:e uppl.)
ebrary, Inc. Ward Valley: An Examination of Seven Issues in Earth Sciences and Ecology. Washington, DC: National Academy Press, 1995.
MLA-referens (9:e uppl.)
ebrary, Inc. Ward Valley: An Examination of Seven Issues in Earth Sciences and Ecology. National Academy Press, 1995.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.