%0 Conference Paper %B Group '12 Conference %D 2012 %T Purposeful gaming & socio-computational systems: A citizen science design case %A Nathan Prestopnik %A Kevin Crowston %B Group '12 Conference %C Sanibel Island, FL, USA %8 10/2012 %> https://crowston.syr.edu/sites/crowston.syr.edu/files/citizensort_cameraready.pdf