APA (7th ed.) Citation

Melzack, R., & Wall, P. D. (1991). The challenge of pain (Rev. ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Melzack, Ronald, and Patrick D. Wall. The Challenge of Pain. Rev. ed. London: Penguin Books, 1991.

MLA (9th ed.) Citation

Melzack, Ronald, and Patrick D. Wall. The Challenge of Pain. Rev. ed. Penguin Books, 1991.