APA (7th ed.) Citation

Costantino, M. (2001). The illustrated flag handbook: A guide to over 200 flags from around the world. D&S Books.

Chicago Style (17th ed.) Citation

Costantino, Maria. The Illustrated Flag Handbook: A Guide to over 200 Flags from Around the World. England: D&S Books, 2001.

MLA (9th ed.) Citation

Costantino, Maria. The Illustrated Flag Handbook: A Guide to over 200 Flags from Around the World. D&S Books, 2001.