APA (7th ed.) Citation

Keyes, M. (2013). The mystery of Mercy Close. Penguin Books.

Chicago Style (17th ed.) Citation

Keyes, Marian. The Mystery of Mercy Close. London [u.a.]: Penguin Books, 2013.

MLA (9th ed.) Citation

Keyes, Marian. The Mystery of Mercy Close. Penguin Books, 2013.

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