British Grassland Society. (1979). Grass and Forage Science. Blackwell Scientific Publications.
Citação do estilo Chicago (17ª ed.)British Grassland Society. Grass and Forage Science. Oxford, Inglaterra: Blackwell Scientific Publications, 1979.
Citação MLA (8ª ed.)British Grassland Society. Grass and Forage Science. Blackwell Scientific Publications, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.