Cita APA (7th ed.)

Southwood, R., & Henderson, P. A. (2000). Ecological methods (3rd ed.). Blackwell Science.

Cita Chicago (17th ed.)

Southwood, Richard, i P. A. Henderson. Ecological Methods. 3rd ed. Oxford ; Malden, MA: Blackwell Science, 2000.

Cita MLA (9th ed.)

Southwood, Richard, i P. A. Henderson. Ecological Methods. 3rd ed. Blackwell Science, 2000.