Não informado. (1930). Bulletin of the Ministry of Agriculture, Fisheries and Food. Ministry of Agriculture, Fisheries and Food.
Citação do estilo Chicago (17ª ed.)Não informado. Bulletin of the Ministry of Agriculture, Fisheries and Food. London: Ministry of Agriculture, Fisheries and Food, 1930.
Citação MLA (8ª ed.)Não informado. Bulletin of the Ministry of Agriculture, Fisheries and Food. Ministry of Agriculture, Fisheries and Food, 1930.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.