APA (7th ed.) Citation

Ryan. (1997). Complete flags of the world. Dorling Kindersley.

Chicago Style (17th ed.) Citation

Ryan. Complete Flags of the World. London: Dorling Kindersley, 1997.

MLA (8th ed.) Citation

Ryan. Complete Flags of the World. Dorling Kindersley, 1997.

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