"A recorder group"

Chicago citation style
"A recorder group". 1974-05-05. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/70781. (Accessed December 10, 2018.)
APA citation style
(1974-05-05) "A recorder group". Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/70781
MLA citation style
Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/70781>.
Note: These citations are programmatically generated and may be incomplete.