Cita APA

International plant, G. r. I. (1977). Soil organic matter studies.Vol21. International Atomic Energy Agency.

Citación estilo Chicago

International plant, Genetic resources Institute. Soil Organic Matter Studies.Vol21. Vienna: International Atomic Energy Agency, 1977.

Cita MLA

International plant, Genetic resources Institute. Soil Organic Matter Studies.Vol21. International Atomic Energy Agency, 1977.