Sutherland, W. J. (1996). Ecological Census Techniques: A Handbook. Cambridge University.
Cita Chicago Style (17a ed.)Sutherland, William J. Ecological Census Techniques: A Handbook. UK: Cambridge University, 1996.
Cita MLA (9a ed.)Sutherland, William J. Ecological Census Techniques: A Handbook. Cambridge University, 1996.
Precaución: Estas citas no son 100% exactas.