Não informado. (1976). Quarterly oil statistics. Organization for Economic Co-operation and Development.
Chicago-referens (17:e uppl.)Não informado. Quarterly Oil Statistics. Paris: Organization for Economic Co-operation and Development, 1976.
MLA-referens (8:e uppl.)Não informado. Quarterly Oil Statistics. Organization for Economic Co-operation and Development, 1976.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.