American Association for the Advancement of Science. (2001). Science; Ecology through time. s.e.
Chicago-referens (17:e uppl.)American Association for the Advancement of Science. Science; Ecology Through Time. Massachusetts: s.e, 2001.
MLA-referens (9:e uppl.)American Association for the Advancement of Science. Science; Ecology Through Time. s.e, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.