APA način citiranja (7. izdanje)
ebrary, Inc, & Heckrath, G. (2005). Tools for assessing phosphorus loss from Nordic agriculture. Nordic Council of Ministers.
Čikaški stil citiranja (17. izdanje)
ebrary, Inc, i Goswin Heckrath. Tools for Assessing Phosphorus Loss from Nordic Agriculture. Copenhagen: Nordic Council of Ministers, 2005.
MLA način citiranja (9. izdanje)
ebrary, Inc, i Goswin Heckrath. Tools for Assessing Phosphorus Loss from Nordic Agriculture. Nordic Council of Ministers, 2005.
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