APA   Click to copy
Dey, A. K., & Mankoff, J. (2005). Designing mediation for context-aware applications. ACM Transactions on Computer-Human Interaction, 12(1), 53–80.

Chicago/Turabian   Click to copy
Dey, Anind K., and Jennifer Mankoff. “Designing Mediation for Context-Aware Applications.” ACM Transactions on Computer-Human Interaction 12, no. 1 (January 28, 2005): 53–80.

MLA   Click to copy
Dey, Anind K., and Jennifer Mankoff. “Designing Mediation for Context-Aware Applications.” ACM Transactions on Computer-Human Interaction, vol. 12, no. 1, Jan. 2005, pp. 53–80.

@article{anind2005a,
  title = {Designing mediation for context-aware applications},
  year = {2005},
  month = jan,
  day = {28},
  issue = {1},
  journal = {ACM Transactions on Computer-Human Interaction},
  pages = {53-80},
  volume = {12},
  author = {Dey, Anind K. and Mankoff, Jennifer},
  month_numeric = {1}
}