APA   Click to copy
Dey, A. K., Hamid, R., Beckmann, C., Li, I., & Hsu, D. (2004). a CAPpella: programming by demonstration of context-aware applications. Human Factors in Computing Systems, 33–40.

Chicago/Turabian   Click to copy
Dey, Anind K., Raffay Hamid, Chris Beckmann, Ian Li, and Daniel Hsu. “a CAPpella: Programming by Demonstration of Context-Aware Applications.” Human Factors in Computing Systems (March 24, 2004): 33–40.

MLA   Click to copy
Dey, Anind K., et al. “a CAPpella: Programming by Demonstration of Context-Aware Applications.” Human Factors in Computing Systems, Mar. 2004, pp. 33–40.

@article{anind2004a,
  title = {a CAPpella: programming by demonstration of context-aware applications},
  year = {2004},
  month = mar,
  day = {24},
  journal = {Human Factors in Computing Systems},
  pages = {33-40},
  author = {Dey, Anind K. and Hamid, Raffay and Beckmann, Chris and Li, Ian and Hsu, Daniel},
  booktitle = {chi},
  month_numeric = {3}
}