STEEN, E. B. (1971). Dictionary Of Biology. Barnes & Noble Books.
Lua i Stíl Chicago (17ú heag.)STEEN, Edwin B. Dictionary Of Biology. Barnes & Noble Books, 1971.
Lua MLA (8ú heag.)STEEN, Edwin B. Dictionary Of Biology. Barnes & Noble Books, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.