APA   Click to copy
Fan, C., Forlizzi, J., & Dey, A. K. (2012). A spark of activity: exploring informative art as visualization for physical activity. Ubiquitous Computing, 81–84.

Chicago/Turabian   Click to copy
Fan, Chloe, Jodi Forlizzi, and Anind K. Dey. “A Spark of Activity: Exploring Informative Art as Visualization for Physical Activity.” Ubiquitous Computing (August 4, 2012): 81–84.

MLA   Click to copy
Fan, Chloe, et al. “A Spark of Activity: Exploring Informative Art as Visualization for Physical Activity.” Ubiquitous Computing, Aug. 2012, pp. 81–84.

@article{chloe2012a,
  title = {A spark of activity: exploring informative art as visualization for physical activity},
  year = {2012},
  month = aug,
  day = {4},
  journal = {Ubiquitous Computing},
  pages = {81-84},
  author = {Fan, Chloe and Forlizzi, Jodi and Dey, Anind K.},
  booktitle = {ubicomp},
  month_numeric = {8}
}