Não informado. (1961). Gulf Research Reports. Gulf Coast Research Laboratory.
Chicago-referens (17:e uppl.)Não informado. Gulf Research Reports. Ocean Springs, Miss: Gulf Coast Research Laboratory, 1961.
MLA-referens (8:e uppl.)Não informado. Gulf Research Reports. Gulf Coast Research Laboratory, 1961.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.