Bell, P. R. (1959). Darwin's biological work: Some aspects reconsidered. Cambridge University Press.
Citazione stile Chigago Style (17a edizione)Bell, Peter R. Darwin's Biological Work: Some Aspects Reconsidered. Cambridge: Cambridge University Press, 1959.
Citatione MLA (9a ed.)Bell, Peter R. Darwin's Biological Work: Some Aspects Reconsidered. Cambridge University Press, 1959.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.