APA (7th ed.) Citation

Joan Lennon. (2007). Questors: To save the world you need a hero (1st.). Penguin books.

Chicago Style (17th ed.) Citation

Joan Lennon. Questors: To Save the World You Need a Hero. 1st. England: Penguin books, 2007.

MLA (9th ed.) Citation

Joan Lennon. Questors: To Save the World You Need a Hero. 1st. Penguin books, 2007.

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