APA   Click to copy
Li, I., Medynskiy, Y., Froehlich, J., & Larsen, J. E. (2012). Personal informatics in practice: improving quality of life through data. Human Factors in Computing Systems, 2799–2802.

Chicago/Turabian   Click to copy
Li, Ian, Yevgeniy Medynskiy, Jon Froehlich, and Jakob E. Larsen. “Personal Informatics in Practice: Improving Quality of Life through Data.” Human Factors in Computing Systems (April 4, 2012): 2799–2802.

MLA   Click to copy
Li, Ian, et al. “Personal Informatics in Practice: Improving Quality of Life through Data.” Human Factors in Computing Systems, Apr. 2012, pp. 2799–802.

@article{ian2012a,
  title = {Personal informatics in practice: improving quality of life through data},
  year = {2012},
  month = apr,
  day = {4},
  journal = {Human Factors in Computing Systems},
  pages = {2799-2802},
  author = {Li, Ian and Medynskiy, Yevgeniy and Froehlich, Jon and Larsen, Jakob E.},
  booktitle = {chi},
  month_numeric = {4}
}