Carrington Lue, Rosetta, and Ryan Birchmeier. “Public Sector Customer Service: Philly 311 - Triumphing to Transform Local Government Service Delivery”. Social Innovations Journal, no. 15 (October 31, 2013). Accessed May 12, 2026. https://socialinnovationsjournal.com/index.php/sij/article/view/10585.