"Hard hat rally"

Chicago citation style
Camp, Don. "Hard hat rally". 1972-09-14. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/59139. (Accessed December 10, 2018.)
APA citation style
Camp, Don, (1972-09-14) "Hard hat rally". Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/59139
MLA citation style
Camp, Don. Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/59139>.
Note: These citations are programmatically generated and may be incomplete.