Não informado. (1956). Farm Bulletin. Republic of Ireland, Department of Agriculture and Fisheries.
Chicago-referens (17:e uppl.)Não informado. Farm Bulletin. Dublin: Republic of Ireland, Department of Agriculture and Fisheries, 1956.
MLA-referens (8:e uppl.)Não informado. Farm Bulletin. Republic of Ireland, Department of Agriculture and Fisheries, 1956.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.