(2004). THE SECRET SEVEN GO AHEAD, SECRET SEVEN ( REPLACED ON 1st SEP 2015 ). HODDER CHILDREN'S BOOKS.
Chicago-viite (17. p.)THE SECRET SEVEN GO AHEAD, SECRET SEVEN ( REPLACED ON 1st SEP 2015 ). LONDON: HODDER CHILDREN'S BOOKS, 2004.
MLA-viite (9. p.)THE SECRET SEVEN GO AHEAD, SECRET SEVEN ( REPLACED ON 1st SEP 2015 ). HODDER CHILDREN'S BOOKS, 2004.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.