CagneyKathleen A.GlassThoman A.SkarupskiKimberly A.BarnesLisa L.SchwartsBrian S.Mendes De LeonCarlos F.2009. “Neighborhood-Level Cohesion and Disorder: Measurement and Validation in Two Older Adult Urban Populations.”Journal of Gerontology—Series B Psychological Sciences and Social Sciences64(3):415–24. https://doi.org/10.1093/geronb/bgn041.