APA (7th ed.) Citation

De Kleer, V. S. (2007). A visual guide to the flags of the world. Chatham Publ.

Chicago Style (17th ed.) Citation

De Kleer, V. S. A Visual Guide to the Flags of the World. London [u.a.]: Chatham Publ, 2007.

MLA (9th ed.) Citation

De Kleer, V. S. A Visual Guide to the Flags of the World. Chatham Publ, 2007.