APA (7th ed.) Citation

Zappa, S. M., Rose, Z., & Zappa, A. (2016). Leona's unlucky mission. Parragon Books Ltd.

Chicago Style (17th ed.) Citation

Zappa, Shana Muldoon, Zelda Rose, and Ahmet Zappa. Leona's Unlucky Mission. Bath: Parragon Books Ltd, 2016.

MLA (9th ed.) Citation

Zappa, Shana Muldoon, et al. Leona's Unlucky Mission. Parragon Books Ltd, 2016.