Valdez, 3 letters, 1991-06-24, to LA Police Commissioners, et al

Chicago citation style
Valdez, Ernest F. Valdez, 3 letters, 1991-06-24, to LA Police Commissioners, et al. 1991-06-24. Retrieved from the Digital Public Library of America, http://digitallibrary.usc.edu/cdm/ref/collection/p15799coll69/id/16921. (Accessed November 13, 2018.)
APA citation style
Valdez, Ernest F, (1991-06-24) Valdez, 3 letters, 1991-06-24, to LA Police Commissioners, et al. Retrieved from the Digital Public Library of America, http://digitallibrary.usc.edu/cdm/ref/collection/p15799coll69/id/16921
MLA citation style
Valdez, Ernest F. Retrieved from the Digital Public Library of America <http://digitallibrary.usc.edu/cdm/ref/collection/p15799coll69/id/16921>.
Note: These citations are programmatically generated and may be incomplete.