APA   Click to copy
Salber, D., Dey, A. K., & Abowd, G. D. (1999). The context toolkit: aiding the development of context-enabled applications. Human Factors in Computing Systems, 434–441.

Chicago/Turabian   Click to copy
Salber, Daniel, Anind K. Dey, and Gregory D. Abowd. “The Context Toolkit: Aiding the Development of Context-Enabled Applications.” Human Factors in Computing Systems (March 30, 1999): 434–441.

MLA   Click to copy
Salber, Daniel, et al. “The Context Toolkit: Aiding the Development of Context-Enabled Applications.” Human Factors in Computing Systems, Mar. 1999, pp. 434–41.

@article{daniel1999a,
  title = {The context toolkit: aiding the development of context-enabled applications},
  year = {1999},
  month = mar,
  day = {30},
  journal = {Human Factors in Computing Systems},
  pages = {434-441},
  author = {Salber, Daniel and Dey, Anind K. and Abowd, Gregory D.},
  booktitle = {chi},
  month_numeric = {3}
}