ENID, B. (2015). THE SECRET SEVEN: SECRET SEVEN ON THE TRAIL (1st.). HODDER CHILDREN'S BOOKS.
Chicagoスタイル(17版)引用形式ENID, BLYTON. THE SECRET SEVEN: SECRET SEVEN ON THE TRAIL. 1st. GREAT BRITAIN: HODDER CHILDREN'S BOOKS, 2015.
MLA(9版)引用形式ENID, BLYTON. THE SECRET SEVEN: SECRET SEVEN ON THE TRAIL. 1st. HODDER CHILDREN'S BOOKS, 2015.
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