(2002). K-16 Science Education Class.
Lua i Stíl Chicago (17ú heag.)K-16 Science Education Class. 2002.
Lua MLA (8ú heag.)K-16 Science Education Class. 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)