Sinnott-Armstrong, W., & Summers, J. S. (2018). Defining addiction: A pragmatic perspective. In The Routledge Handbook of Philosophy and Science of Addiction (pp. 123–131).

Sinnott-Armstrong, W., and J. S. Summers. “Defining addiction: A pragmatic perspective.” In The Routledge Handbook of Philosophy and Science of Addiction, 123–31, 2018.

Sinnott-Armstrong W, Summers JS. Defining addiction: A pragmatic perspective. In: The Routledge Handbook of Philosophy and Science of Addiction. 2018. p. 123–31.

Sinnott-Armstrong, W., and J. S. Summers. “Defining addiction: A pragmatic perspective.” The Routledge Handbook of Philosophy and Science of Addiction, 2018, pp. 123–31.

Sinnott-Armstrong W, Summers JS. Defining addiction: A pragmatic perspective. The Routledge Handbook of Philosophy and Science of Addiction. 2018. p. 123–131.