Mask, Oxygen, Type H, Royal Air Force

Chicago citation style
Mask, Oxygen, Type H, Royal Air Force. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anasm_A19751486000&repo=DPLA. (Accessed September 19, 2018.)
APA citation style
Mask, Oxygen, Type H, Royal Air Force. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anasm_A19751486000&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anasm_A19751486000&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.