Blyton, E. (1956). The Famous Five: Five On A Secret Trail (Reprint 2015.). Hodder's Children's Books.
Lua i Stíl Chicago (17ú heag.)Blyton, Enid. The Famous Five: Five On A Secret Trail. Reprint 2015. Great Britain: Hodder's Children's Books, 1956.
Lua MLA (9ú heag.)Blyton, Enid. The Famous Five: Five On A Secret Trail. Reprint 2015. Hodder's Children's Books, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.