APA (7th ed.) Citation

Duffy, M., & Hemingway, A. (2018). From ice to fire. BBC Worldwide.

Chicago Style (17th ed.) Citation

Duffy, Michael, and Alex Hemingway. From Ice to Fire. London, England: BBC Worldwide, 2018.

MLA (9th ed.) Citation

Duffy, Michael, and Alex Hemingway. From Ice to Fire. BBC Worldwide, 2018.