Duncan, T. (1995). GCSE physics (3rd ed.). John Murray.
Lua i Stíl Chicago (17ú heag.)Duncan, Tom. GCSE Physics. 3rd ed. London: John Murray, 1995.
Lua MLA (9ú heag.)Duncan, Tom. GCSE Physics. 3rd ed. John Murray, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.