Cita APA (7a ed.)
Westerhof, R., Vilela, L., Ayarza, M. A., & Zech, W. (1999). Carbon fractions as sensitive indicators of quality of soil organic matter. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Westerhof, R., Lourival Vilela, Miguel Angel Ayarza, y W. Zech. Carbon Fractions as Sensitive Indicators of Quality of Soil Organic Matter. International Center for Tropical Agriculture, 1999.
Cita MLA (9a ed.)
Westerhof, R., et al. Carbon Fractions as Sensitive Indicators of Quality of Soil Organic Matter. International Center for Tropical Agriculture, 1999.
Precaución: Estas citas no son 100% exactas.