ENID, B. (2015). THE SECRET SEVEN: SECRET SEVEN ON THE TRAIL (1st.). HODDER CHILDREN'S BOOKS.
Lua i Stíl Chicago (17ú heag.)ENID, BLYTON. THE SECRET SEVEN: SECRET SEVEN ON THE TRAIL. 1st. GREAT BRITAIN: HODDER CHILDREN'S BOOKS, 2015.
Lua MLA (9ú heag.)ENID, BLYTON. THE SECRET SEVEN: SECRET SEVEN ON THE TRAIL. 1st. HODDER CHILDREN'S BOOKS, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.