David Sang. (2014). Cambridge IGCSE® Physics Workbook (Cambridge International IGCSE) (2.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)David Sang. Cambridge IGCSE® Physics Workbook (Cambridge International IGCSE). 2. Cambridge University Press, 2014.
Lua MLA (9ú heag.)David Sang. Cambridge IGCSE® Physics Workbook (Cambridge International IGCSE). 2. Cambridge University Press, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.