APA (7th ed.) Citation

Meg Cabot. (2003). The Secret Princess Diaries. Macmillan Children's Books.

Chicago Style (17th ed.) Citation

Meg Cabot. The Secret Princess Diaries. London: Macmillan Children's Books, 2003.

MLA (9th ed.) Citation

Meg Cabot. The Secret Princess Diaries. Macmillan Children's Books, 2003.

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