SIEBRING, B. Chemistry. McGraw-Hill Book Company.
Lua i Stíl Chicago (17ú heag.)SIEBRING, B.C. Chemistry. McGraw-Hill Book Company.
Lua MLA (8ú heag.)SIEBRING, B.C. Chemistry. McGraw-Hill Book Company.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.