APA   Click to copy
Cohen, L. L., Vowles, K. E., & Eccleston, C. (2010). The impact of adolescent chronic pain on functioning: Disentangling the complex role of anxiety. The Journal of Pain, 11, 1039–1046.

Chicago/Turabian   Click to copy
Cohen, Lindsey L, Kevin E Vowles, and Christopher Eccleston. “The Impact of Adolescent Chronic Pain on Functioning: Disentangling the Complex Role of Anxiety.” The Journal of Pain 11 (2010): 1039–1046.

MLA   Click to copy
Cohen, Lindsey L., et al. “The Impact of Adolescent Chronic Pain on Functioning: Disentangling the Complex Role of Anxiety.” The Journal of Pain, vol. 11, Churchill Livingstone, 2010, pp. 1039–46.

@article{cohen2010a,
  title = {The impact of adolescent chronic pain on functioning: Disentangling the complex role of anxiety},
  year = {2010},
  journal = {The Journal of Pain},
  pages = {1039--1046},
  publisher = {Churchill Livingstone},
  volume = {11},
  author = {Cohen, Lindsey L and Vowles, Kevin E and Eccleston, Christopher}
}