Gotelli, N. J. (2001). A primer of ecology third edition. Sinauer Associates.
Lua i Stíl Chicago (17ú heag.)Gotelli, Nicholas J. A Primer of Ecology Third Edition. Sinauer Associates, 2001.
Lua MLA (8ú heag.)Gotelli, Nicholas J. A Primer of Ecology Third Edition. Sinauer Associates, 2001.
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