APA (7th ed.) Citation

Bathie, H., Skipp, H., & Jeffries, S. (2017). 199 things flags. Usborne Publishing Ltd..

Chicago Style (17th ed.) Citation

Bathie, Holly, Hui Skipp, and Stephanie Jeffries. 199 Things Flags. London: Usborne Publishing Ltd., 2017.

MLA (8th ed.) Citation

Bathie, Holly, et al. 199 Things Flags. Usborne Publishing Ltd., 2017.