Riordan Rick. (2012). Serpent's Shadow. Puffin Books.
Lua i Stíl Chicago (17ú heag.)Riordan Rick. Serpent's Shadow. England: Puffin Books, 2012.
Lua MLA (9ú heag.)Riordan Rick. Serpent's Shadow. Puffin Books, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.