APA (7e ed.) Bronvermelding
Helzer, C. (2010). The ecology and management of prairies in the central United States. Published for The Nature Conservancy by the University of Iowa Press.
Chicago (17e ed.) Bronvermelding
Helzer, Chris. The Ecology and Management of Prairies in the Central United States. Iowa City: Published for The Nature Conservancy by the University of Iowa Press, 2010.
MLA (9e ed.) Bronvermelding
Helzer, Chris. The Ecology and Management of Prairies in the Central United States. Published for The Nature Conservancy by the University of Iowa Press, 2010.
Let op: Deze citaties zijn niet altijd 100% accuraat.