APA (7th ed.) Citation

Erica David & Robinson, B. (2017). Anna & Elsa: All hail the queen. Parragon Books Ltd.

Chicago Style (17th ed.) Citation

Erica David and Bill Robinson. Anna & Elsa: All Hail the Queen. UK: Parragon Books Ltd, 2017.

MLA (9th ed.) Citation

Erica David and Bill Robinson. Anna & Elsa: All Hail the Queen. Parragon Books Ltd, 2017.