APA (7th ed.) Citation

Hoffman, A. (2004). Indigo (1. publ. in Great Britain.). Egmont.

Chicago Style (17th ed.) Citation

Hoffman, Alice. Indigo. 1. publ. in Great Britain. London: Egmont, 2004.

MLA (9th ed.) Citation

Hoffman, Alice. Indigo. 1. publ. in Great Britain. Egmont, 2004.

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