APA   Click to copy
Mayer, S., Tschofen, A., Dey, A. K., & Mattern, F. (2014). User interfaces for smart things -- A generative approach with semantic interaction descriptions. ACM Transactions on Computer-Human Interaction, 21(2).

Chicago/Turabian   Click to copy
Mayer, Simon, Andreas Tschofen, Anind K. Dey, and Friedemann Mattern. “User Interfaces for Smart Things -- A Generative Approach with Semantic Interaction Descriptions.” ACM Transactions on Computer-Human Interaction 21, no. 2 (January 1, 2014).

MLA   Click to copy
Mayer, Simon, et al. “User Interfaces for Smart Things -- A Generative Approach with Semantic Interaction Descriptions.” ACM Transactions on Computer-Human Interaction, vol. 21, no. 2, Jan. 2014.

@article{simon2014a,
  title = {User interfaces for smart things -- A generative approach with semantic interaction descriptions},
  year = {2014},
  month = jan,
  day = {1},
  issue = {2},
  journal = {ACM Transactions on Computer-Human Interaction},
  volume = {21},
  author = {Mayer, Simon and Tschofen, Andreas and Dey, Anind K. and Mattern, Friedemann},
  month_numeric = {1}
}