APA (7th ed.) Citation

Highfield. (2002). The science of Harry Potter: How magic really works. Penguin Books.

Chicago Style (17th ed.) Citation

Highfield. The Science of Harry Potter: How Magic Really Works. London: Penguin Books, 2002.

MLA (8th ed.) Citation

Highfield. The Science of Harry Potter: How Magic Really Works. Penguin Books, 2002.

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