Paper  bibtex   

@article{ garrison_blended_2004,
  title = {Blended learning: {Uncovering} its transformative potential in higher education},
  volume = {7},
  shorttitle = {Blended learning},
  url = {http://www.sciencedirect.com/science/article/pii/S1096751604000156},
  number = {2},
  urldate = {2012-06-29TZ},
  journal = {The internet and higher education},
  author = {Garrison, D. R and Kanuka, H.},
  year = {2004},
  pages = {95--105}
}