Não informado. (1939). Agenda and Abstracts of the Scientific Meetings. Zoological Society of London.
Chicago-referens (17:e uppl.)Não informado. Agenda and Abstracts of the Scientific Meetings. London: Zoological Society of London, 1939.
MLA-referens (8:e uppl.)Não informado. Agenda and Abstracts of the Scientific Meetings. Zoological Society of London, 1939.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.