APA (7th ed.) Citation
Westerhof, R., Silva, J. d., Ayarza, M. A., & Zech, W. (1999). Phosphorus fractions under different land-use systems in oxisols of the Brazilian cerrados. International Center for Tropical Agriculture.
Chicago Style (17th ed.) Citation
Westerhof, R., J.E. da Silva, Miguel Angel Ayarza, and W. Zech. Phosphorus Fractions Under Different Land-use Systems in Oxisols of the Brazilian Cerrados. International Center for Tropical Agriculture, 1999.
MLA (9th ed.) Citation
Westerhof, R., et al. Phosphorus Fractions Under Different Land-use Systems in Oxisols of the Brazilian Cerrados. International Center for Tropical Agriculture, 1999.
Warning: These citations may not always be 100% accurate.