APA (7th ed.) Citation

Arnold, M. B. (1968). The nature of emotion: Selected readings. Penguin Books.

Chicago Style (17th ed.) Citation

Arnold, Magda B. The Nature of Emotion: Selected Readings. Harmondsworth, Middlesex, England ; Baltimore, U.S.A. ; Victoria, Australia: Penguin Books, 1968.

MLA (9th ed.) Citation

Arnold, Magda B. The Nature of Emotion: Selected Readings. Penguin Books, 1968.