APA
Clapp C., Cornell Agricultural Waste Management Conference 9., Dowdy R., Duncomb D., Larson R., Larson W. & Linden D. (1977). Crop yields and water quality after application of sewage sludge to an agricultural watershed. : .
Chicago
Clapp C.E, Cornell Agricultural Waste Management Conference 9, Dowdy R.H, Duncomb D.R, Larson R.E, Larson W.E and Linden D.R. 1977. Crop yields and water quality after application of sewage sludge to an agricultural watershed. : .
Harvard
Clapp C., Cornell Agricultural Waste Management Conference 9., Dowdy R., Duncomb D., Larson R., Larson W. and Linden D. (1977). Crop yields and water quality after application of sewage sludge to an agricultural watershed. : .
MLA
Clapp C.E, Cornell Agricultural Waste Management Conference 9, Dowdy R.H, Duncomb D.R, Larson R.E, Larson W.E and Linden D.R. Crop yields and water quality after application of sewage sludge to an agricultural watershed. : . 1977.