APA (7th ed.) Citation

Cornwell, J. (1989). A thief in the night: The mysterious death of Pope John Paul I. Simon and Schuster.

Chicago Style (17th ed.) Citation

Cornwell, John. A Thief in the Night: The Mysterious Death of Pope John Paul I. New York: Simon and Schuster, 1989.

MLA (9th ed.) Citation

Cornwell, John. A Thief in the Night: The Mysterious Death of Pope John Paul I. Simon and Schuster, 1989.