Cita APA (7a ed.)
Westerhof, R., Vilela, L., Ayarza, M. A., & Zech, W. (1999). Labile N and the nitrogen management index of oxisols in the Brazilian cerrados. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Westerhof, R., Lourival Vilela, Miguel Angel Ayarza, y W. Zech. Labile N and the Nitrogen Management Index of Oxisols in the Brazilian Cerrados. International Center for Tropical Agriculture, 1999.
Cita MLA (9a ed.)
Westerhof, R., et al. Labile N and the Nitrogen Management Index of Oxisols in the Brazilian Cerrados. International Center for Tropical Agriculture, 1999.
Precaución: Estas citas no son 100% exactas.