Council of Biological and Medical Abstracts. (1969). Soil biology and biochemistry. Pergamon Press.
Citação do estilo Chicago (17ª ed.)Council of Biological and Medical Abstracts. Soil Biology and Biochemistry. Elmsford, NY: Pergamon Press, 1969.
Citação MLA (8ª ed.)Council of Biological and Medical Abstracts. Soil Biology and Biochemistry. Pergamon Press, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.