Richard Harwood; Ian Lodge. (2014). Cambridge IGCSE® Chemistry Workbook (Cambridge International IGCSE) (4.). CAMBRIDGE UNIVERSITY PRESS.
Lua i Stíl Chicago (17ú heag.)Richard Harwood; Ian Lodge. Cambridge IGCSE® Chemistry Workbook (Cambridge International IGCSE). 4. CAMBRIDGE UNIVERSITY PRESS, 2014.
Lua MLA (9ú heag.)Richard Harwood; Ian Lodge. Cambridge IGCSE® Chemistry Workbook (Cambridge International IGCSE). 4. CAMBRIDGE UNIVERSITY PRESS, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.