De Vries, W., & Bakker, D. J. (1996). Manual for calculating critical loads of heavy metals for soils and surface waters: Preliminary guidelines for environmental quality criterial calculation methods and input data. DLO Winand Staring Centre.
Cita Chicago Style (17a ed.)De Vries, W., y D. J. Bakker. Manual for Calculating Critical Loads of Heavy Metals for Soils and Surface Waters: Preliminary Guidelines for Environmental Quality Criterial Calculation Methods and Input Data. Wageningen (The Netherlands): DLO Winand Staring Centre, 1996.
Cita MLA (9a ed.)De Vries, W., y D. J. Bakker. Manual for Calculating Critical Loads of Heavy Metals for Soils and Surface Waters: Preliminary Guidelines for Environmental Quality Criterial Calculation Methods and Input Data. DLO Winand Staring Centre, 1996.