Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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