Παραπομπή APA

Sutherland, W. J. (1996). Ecological census techniques: : a hand book. Cambridge University Press.

Παραπομπή Chicago Style

Sutherland, William J. Ecological Census Techniques: : A Hand Book. Cambridge University Press, 1996.

Παραπομπή MLA

Sutherland, William J. Ecological Census Techniques: : A Hand Book. Cambridge University Press, 1996.