APA (7e ed.) Bronvermelding
ebrary, Inc, Knight, R. L., & Riedel, S. (2002). Aldo Leopold and the ecological conscience. Oxford University Press.
Chicago (17e ed.) Bronvermelding
ebrary, Inc, Richard L. Knight, en Suzanne Riedel. Aldo Leopold and the Ecological Conscience. Oxford ; New York: Oxford University Press, 2002.
MLA (9e ed.) Bronvermelding
ebrary, Inc, et al. Aldo Leopold and the Ecological Conscience. Oxford University Press, 2002.
Let op: Deze citaties zijn niet altijd 100% accuraat.