(2006). Ecological census techniques a handbook 2nd ed. Cambridge Univ. Press.
Lua i Stíl Chicago (17ú heag.)Ecological Census Techniques a Handbook 2nd Ed. Cambridge Univ. Press, 2006.
Lua MLA (8ú heag.)Ecological Census Techniques a Handbook 2nd Ed. Cambridge Univ. Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.