APA (7th ed.) Citation

Costantino, M. (2006). Pocket guide to flags. Silverdale Books.

Chicago Style (17th ed.) Citation

Costantino, Maria. Pocket Guide to Flags. England: Silverdale Books, 2006.

MLA (9th ed.) Citation

Costantino, Maria. Pocket Guide to Flags. Silverdale Books, 2006.

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