APA (7th ed.) Citation

Potts, J. (2003). Guide to flags of the world. Philip's.

Chicago Style (17th ed.) Citation

Potts, Jo. Guide to Flags of the World. London: Philip's, 2003.

MLA (9th ed.) Citation

Potts, Jo. Guide to Flags of the World. Philip's, 2003.

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