I’d recommend Emile Durkheim’s “Suicide” if you fancy learning more. Here is a good source too; https://legislature.vermont.gov/Documents/2020/WorkGroups/Senate%20Judiciary/Bills/S.22/Written%20Testimony/S.22~Bob%20DePino~Article%20on%20Homicide%20and%20Suicide%20in%20America,%201900-1998~3-15-2019.pdf