(2011). Campbell biology 9th ed. Pearson.
Lua i Stíl Chicago (17ú heag.)Campbell Biology 9th Ed. Pearson, 2011.
Lua MLA (8ú heag.)Campbell Biology 9th Ed. Pearson, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)