APA Format
FAO . (). Assessing-soil-contamination:-A-reference-manual,-FAO-pesticide-disposal-series-No.8. : Rome-FAO-2000
MLA Format
FAO . Assessing-soil-contamination:-A-reference-manual,-FAO-pesticide-disposal-series-No.8. : Rome-FAO-2000,
Australian/Harvard Format
FAO . . Assessing-soil-contamination:-A-reference-manual,-FAO-pesticide-disposal-series-No.8. Rome-FAO-2000, 
Warning: These citations may not always be 100% accurate.