Παραπομπή APA

Southwood,T.R.E. (2000). Ecological methods (3.). Blackwell Science.

Παραπομπή Chicago Style

Southwood,T.R.E. Ecological Methods. 3. United Kingdom: Blackwell Science, 2000.

Παραπομπή MLA

Southwood,T.R.E. Ecological Methods. 3. Blackwell Science, 2000.