Lua APA (7ú heag.)

Ryan, L. Chemistry for you (New national curriculum edition for GCSE.).

Lua i Stíl Chicago (17ú heag.)

Ryan, Lawrie. Chemistry for You. New national curriculum edition for GCSE.

Lua MLA (8ú heag.)

Ryan, Lawrie. Chemistry for You. New national curriculum edition for GCSE.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.