APA (7e ed.) Bronvermelding
Hjelmar, O. (2009). Treatment methods for waste to be landfilled. Nordic Council of Ministers.
Chicago (17e ed.) Bronvermelding
Hjelmar, Ole. Treatment Methods for Waste to Be Landfilled. Copenhagen: Nordic Council of Ministers, 2009.
MLA (9e ed.) Bronvermelding
Hjelmar, Ole. Treatment Methods for Waste to Be Landfilled. Nordic Council of Ministers, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.