Kerrod, R. (1994). Plant life. Marshall Cavendish.
Lua i Stíl Chicago (17ú heag.)Kerrod, Robin. Plant Life. New York: Marshall Cavendish, 1994.
Lua MLA (9ú heag.)Kerrod, Robin. Plant Life. Marshall Cavendish, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.