Brooks, J. L. (1984). Just before the origin: Alfred Russel Wallace's theory of evolution. Columbia University Press.
Citazione stile Chigago Style (17a edizione)Brooks, John Langdon. Just Before the Origin: Alfred Russel Wallace's Theory of Evolution. New York: Columbia University Press, 1984.
Citatione MLA (9a ed.)Brooks, John Langdon. Just Before the Origin: Alfred Russel Wallace's Theory of Evolution. Columbia University Press, 1984.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.