Etherington, J. R. Plant Physiological ecology.
Lua i Stíl Chicago (17ú heag.)Etherington, John R. Plant Physiological Ecology.
Lua MLA (9ú heag.)Etherington, John R. Plant Physiological Ecology.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.