American Society of Agronomy\nCrop Science Society of America\nSoil Science Society of America. (1972). Journal of Environmental Quality. American Society of Agronomy.
Citação do estilo Chicago (17ª ed.)American Society of Agronomy\nCrop Science Society of America\nSoil Science Society of America. Journal of Environmental Quality. Madison, Wis: American Society of Agronomy, 1972.
Citação MLA (8ª ed.)American Society of Agronomy\nCrop Science Society of America\nSoil Science Society of America. Journal of Environmental Quality. American Society of Agronomy, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.