Blyton, E. (1942). The O'Sullivan Twins At St. Clare's (75th.). Hodder Children's Books.
Chicago Style (17th ed.) CitationBlyton, Enid. The O'Sullivan Twins At St. Clare's. 75th. London: Hodder Children's Books, 1942.
MLA (9th ed.) CitationBlyton, Enid. The O'Sullivan Twins At St. Clare's. 75th. Hodder Children's Books, 1942.
Warning: These citations may not always be 100% accurate.