APA (7e ed.) Bronvermelding
ebrary, Inc, & Heckrath, G. (2005). Tools for assessing phosphorus loss from Nordic agriculture. Nordic Council of Ministers.
Chicago (17e ed.) Bronvermelding
ebrary, Inc, en Goswin Heckrath. Tools for Assessing Phosphorus Loss from Nordic Agriculture. Copenhagen: Nordic Council of Ministers, 2005.
MLA (9e ed.) Bronvermelding
ebrary, Inc, en Goswin Heckrath. Tools for Assessing Phosphorus Loss from Nordic Agriculture. Nordic Council of Ministers, 2005.
Let op: Deze citaties zijn niet altijd 100% accuraat.