Southwood, T. R. E. (2000). Ecological Methods (3rd ed.). Blackwell Science.
Cita Chicago (17th ed.)Southwood, T. R. E. Ecological Methods. 3rd ed. Oxford: Blackwell Science, 2000.
Cita MLA (9th ed.)Southwood, T. R. E. Ecological Methods. 3rd ed. Blackwell Science, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.