BLYTON, E. (2013). THE RIDDLE OF THE HOLLOW TREE. BOUNTY BOOKS.
Čikaški stil citiranja (17. izdanje)BLYTON, ENID. THE RIDDLE OF THE HOLLOW TREE. BOUNTY BOOKS, 2013.
MLA način citiranja (9. izdanje)BLYTON, ENID. THE RIDDLE OF THE HOLLOW TREE. BOUNTY BOOKS, 2013.
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