Não informado. (1939). Bulletin of the Oxford University Institute of Statistics. Oxford University Institute of Statistics.
Chicago-referens (17:e uppl.)Não informado. Bulletin of the Oxford University Institute of Statistics. Oxford, Inglaterra: Oxford University Institute of Statistics, 1939.
MLA-referens (8:e uppl.)Não informado. Bulletin of the Oxford University Institute of Statistics. Oxford University Institute of Statistics, 1939.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.