Não informado. (1964). Commodity yearbook statistical abstract service. Commodity Research Bureau.
Chicago-referens (17:e uppl.)Não informado. Commodity Yearbook Statistical Abstract Service. New York: Commodity Research Bureau, 1964.
MLA-referens (8:e uppl.)Não informado. Commodity Yearbook Statistical Abstract Service. Commodity Research Bureau, 1964.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.