Riordan, R. (2011). The lost hero. Puffin.
Lua i Stíl Chicago (17ú heag.)Riordan, Rick. The Lost Hero. london: Puffin, 2011.
Lua MLA (8ú heag.)Riordan, Rick. The Lost Hero. Puffin, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.