APA (7th ed.) Citation

Morton, A. (1989). Duchess: An intimate portrait of Sarah, Duchess of York. Contemporary Books.

Chicago Style (17th ed.) Citation

Morton, Andrew. Duchess: An Intimate Portrait of Sarah, Duchess of York. Chicago: Contemporary Books, 1989.

MLA (9th ed.) Citation

Morton, Andrew. Duchess: An Intimate Portrait of Sarah, Duchess of York. Contemporary Books, 1989.

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