APA (7th ed.) Citation

Langford, D. (2006). The end of Harry Potter? Gollancz.

Chicago Style (17th ed.) Citation

Langford, David. The End of Harry Potter? London: Gollancz, 2006.

MLA (9th ed.) Citation

Langford, David. The End of Harry Potter? Gollancz, 2006.

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