Blessed are the peacemakers

Chicago citation style
Doyle, Jerry. Blessed are the peacemakers. 1969-1974. Retrieved from the Digital Public Library of America, http://collection1.libraries.psu.edu/cdm/ref/collection/jdp/id/1021. (Accessed September 21, 2018.)
APA citation style
Doyle, Jerry, (1969-1974) Blessed are the peacemakers. Retrieved from the Digital Public Library of America, http://collection1.libraries.psu.edu/cdm/ref/collection/jdp/id/1021
MLA citation style
Doyle, Jerry. Retrieved from the Digital Public Library of America <http://collection1.libraries.psu.edu/cdm/ref/collection/jdp/id/1021>.
Note: These citations are programmatically generated and may be incomplete.