APA (7th ed.) Citation

Prasadam-Halls, S., & Costamagna, B. (2017). Why is ... ? Parragon Books Ltd.

Chicago Style (17th ed.) Citation

Prasadam-Halls, Smriti, and Beatrice Costamagna. Why Is ... ? Bath: Parragon Books Ltd, 2017.

MLA (9th ed.) Citation

Prasadam-Halls, Smriti, and Beatrice Costamagna. Why Is ... ? Parragon Books Ltd, 2017.

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