Enid Blyton. (1956). The Famous Five- Five on a secret trail -15 (2015.). Hodder Children's book.
Chicago-viite (17. p.)Enid Blyton. The Famous Five- Five on a Secret Trail -15. 2015. Hodder Children's book, 1956.
MLA-viite (9. p.)Enid Blyton. The Famous Five- Five on a Secret Trail -15. 2015. Hodder Children's book, 1956.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.