APA (7th ed.) Citation

Powell, D. (1961). An affair of the heart. Penguin Books.

Chicago Style (17th ed.) Citation

Powell, Dilys. An Affair of the Heart. Harmondsworth, Middlesex, Eng.: Penguin Books, 1961.

MLA (9th ed.) Citation

Powell, Dilys. An Affair of the Heart. Penguin Books, 1961.