APA (7th ed.) Citation

Tracey, I., Ploghaus, A., Gati, J., Clare, S., Smith, S., Menon, R., & Matthews, P. (2002). Imaging attentional modulation of pain in the periaqueductal gray in humans.

Chicago Style (17th ed.) Citation

Tracey, I., A. Ploghaus, J. Gati, S. Clare, S. Smith, R. Menon, and P. Matthews. Imaging Attentional Modulation of Pain in the Periaqueductal Gray in Humans. 2002.

MLA (9th ed.) Citation

Tracey, I., et al. Imaging Attentional Modulation of Pain in the Periaqueductal Gray in Humans. 2002.