Παραπομπή APA

Green, N. P. O. (1990). Biological Science 2: Systems, maintenance and change. Cambridge University Press.

Παραπομπή Chicago Style

Green, N. P. O. Biological Science 2: Systems, Maintenance and Change. Cambridge: Cambridge University Press, 1990.

Παραπομπή MLA

Green, N. P. O. Biological Science 2: Systems, Maintenance and Change. Cambridge University Press, 1990.