BLYTON, E. (2004). THE SECRET SEVEN: SHOCK FOR THE SECRET SEVEN. HODDER CHILDREN'S BOOKS.
Lua i Stíl Chicago (17ú heag.)BLYTON, ENID. THE SECRET SEVEN: SHOCK FOR THE SECRET SEVEN. HODDER CHILDREN'S BOOKS, 2004.
Lua MLA (9ú heag.)BLYTON, ENID. THE SECRET SEVEN: SHOCK FOR THE SECRET SEVEN. HODDER CHILDREN'S BOOKS, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.