APA (7th ed.) Citation

Blyton, E. (1980). The adventure four again. Beaver Books.

Chicago Style (17th ed.) Citation

Blyton, Enid. The Adventure Four Again. Beaver Books, 1980.

MLA (8th ed.) Citation

Blyton, Enid. The Adventure Four Again. Beaver Books, 1980.

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