Henderson, P. A., & Southwood, R. S. (2016). Ecological methods (Fourth edition.). John Wiley & Sons, Inc.
Chicago-viite (17. p.)Henderson, P. A., ja Richard Sir Southwood. Ecological Methods. Fourth edition. Chichester, West Sussex, UK, Hoboken, NJ, USA: John Wiley & Sons, Inc, 2016.
MLA-viite (9. p.)Henderson, P. A., ja Richard Sir Southwood. Ecological Methods. Fourth edition. John Wiley & Sons, Inc, 2016.
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