Sutherland, W. J. (1996). Ecological census techniques: : a hand book. Cambridge University Press.
Chicago Style aipamenaSutherland, William J. Ecological Census Techniques: : A Hand Book. Cambridge University Press, 1996.
MLA aipamenaSutherland, William J. Ecological Census Techniques: : A Hand Book. Cambridge University Press, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.