Não informado. (1965). Plant Varieties and Seeds Gazette. Ministry of Agriculture, Fisheries and Food.
Chicago-referens (17:e uppl.)Não informado. Plant Varieties and Seeds Gazette. Cambridge, Inglaterra: Ministry of Agriculture, Fisheries and Food, 1965.
MLA-referens (8:e uppl.)Não informado. Plant Varieties and Seeds Gazette. Ministry of Agriculture, Fisheries and Food, 1965.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.