Cita APA (7a ed.)
ebrary, Inc, Knight, R. L., & Riedel, S. (2002). Aldo Leopold and the ecological conscience. Oxford University Press.
Cita Chicago Style (17a ed.)
ebrary, Inc, Richard L. Knight, y Suzanne Riedel. Aldo Leopold and the Ecological Conscience. Oxford ; New York: Oxford University Press, 2002.
Cita MLA (9a ed.)
ebrary, Inc, et al. Aldo Leopold and the Ecological Conscience. Oxford University Press, 2002.
Precaución: Estas citas no son 100% exactas.