Lua APA (7ú heag.)

Energy digest. Allens Ltd.

Lua i Stíl Chicago (17ú heag.)

Energy Digest. Wheathampstead: Allens Ltd.

Lua MLA (9ú heag.)

Energy Digest. Allens Ltd.

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