Não informado. (1953). Southwestern naturalist. Southwestern Association of Naturalist.
Chicago-referens (17:e uppl.)Não informado. Southwestern Naturalist. Lubbock, Tex: Southwestern Association of Naturalist, 1953.
MLA-referens (8:e uppl.)Não informado. Southwestern Naturalist. Southwestern Association of Naturalist, 1953.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.