Liu, Helen and Jodi Sandfort. "Open Source Platforms for Citizen Engagement: Examining Ashoka's Design and Implementation" Nonprofit Policy Forum, 2.2 (2011): -. Retrieved 24 May. 2013, from doi:10.2202/2154-3348.1022

Liu, H. & Sandfort, J. (2011). Open Source Platforms for Citizen Engagement: Examining Ashoka's Design and Implementation. Nonprofit Policy Forum, 2(2), pp. -. Retrieved 24 May. 2013, from doi:10.2202/2154-3348.1022

Liu, Helen and Jodi Sandfort. 2011. Open Source Platforms for Citizen Engagement: Examining Ashoka's Design and Implementation. Nonprofit Policy Forum. 2(2): -. Retrieved 24 May. 2013, from doi:10.2202/2154-3348.1022