Não informado. (1940). Current review of agricultural conditions in Canada. Department of Agriculture.
Chicago-referens (17:e uppl.)Não informado. Current Review of Agricultural Conditions in Canada. Ottawa: Department of Agriculture, 1940.
MLA-referens (8:e uppl.)Não informado. Current Review of Agricultural Conditions in Canada. Department of Agriculture, 1940.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.