APA (7th ed.) Citation

Blyton, E., Dell, S., & Smith, L. (2011). Hello Mr Twiddle! Award Pub. Ltd.

Chicago Style (17th ed.) Citation

Blyton, Enid, Stephen Dell, and Lesley Smith. Hello Mr Twiddle! Not: Award Pub. Ltd, 2011.

MLA (9th ed.) Citation

Blyton, Enid, et al. Hello Mr Twiddle! Award Pub. Ltd, 2011.