APA (7th ed.) Citation

Goscinny, Uderzo, Bell, A., & Hockridge, D. (1978). Asterix and the Normans. Hodder and Stoughton.

Chicago Style (17th ed.) Citation

Goscinny, Uderzo, Anthea Bell, and Derek Hockridge. Asterix and the Normans. London: Hodder and Stoughton, 1978.

MLA (9th ed.) Citation

Goscinny, et al. Asterix and the Normans. Hodder and Stoughton, 1978.