Não informado. (1999). Annual report on Ground Water in Arizona. Arizona State Land Department.
Chicago-referens (17:e uppl.)Não informado. Annual Report on Ground Water in Arizona. Phoenix, Ariz: Arizona State Land Department, 1999.
MLA-referens (8:e uppl.)Não informado. Annual Report on Ground Water in Arizona. Arizona State Land Department, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.