APA (7th ed.) Citation

BLYTON. (2002). Puzzle for The Secret Seven. Hodder Children's Books.

Chicago Style (17th ed.) Citation

BLYTON. Puzzle for The Secret Seven. London: Hodder Children's Books, 2002.

MLA (9th ed.) Citation

BLYTON. Puzzle for The Secret Seven. Hodder Children's Books, 2002.

Warning: These citations may not always be 100% accurate.