Green, N. P. O. (1990). Biological Science 2: Systems, maintenance and change. Cambridge University Press.
Chicago Style aipamenaGreen, N. P. O. Biological Science 2: Systems, Maintenance and Change. Cambridge: Cambridge University Press, 1990.
MLA aipamenaGreen, N. P. O. Biological Science 2: Systems, Maintenance and Change. Cambridge University Press, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.