Darley, John M. (Personal Name)
Latané, B. The unresponsive bystander: why doesn't he help? 1970.
Information from 678 converted Dec. 17, 2014 (Princeton University)
The chronicle of higher education, Oct. 5, 2018: page A43 (John M. Darley; died Aug. 31, 2018, at age 80; professor emeritus of psychology and public affairs at Princeton University; known for his research on bystander intervention while an assistant professor at New York University)