@conference {Prestopnik:2012a, title = {Purposeful gaming \& socio-computational systems: A citizen science design case}, booktitle = {Group {\textquoteright}12 Conference}, year = {2012}, month = {10/2012}, address = {Sanibel Island, FL, USA}, attachments = {https://citsci.syr.edu/sites/crowston.syr.edu/files/citizensort_cameraready.pdf}, author = {Nathan Prestopnik and Kevin Crowston} }