@inproceedings{2012-crowd-analytics,
  title = {Strategies for Crowdsourcing Social Data Analysis},
  author = {Wesley Willett AND Jeffrey Heer AND Maneesh Agrawala},
  booktitle = {ACM Human Factors in Computing Systems (CHI)},
  year = {2012},
  url = {http://vis.stanford.edu/papers/crowd-analytics}
}