Pumping air

Chicago citation style
Heslop, J. Malan, 1923-2011. Pumping air. 1945. Retrieved from the Digital Public Library of America, https://utah-primoprod.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=digcoll_byu_12JMHes/1928&context=L&vid=MWDL. (Accessed October 17, 2019.)
APA citation style
Heslop, J. Malan, 1923-2011, (1945) Pumping air. Retrieved from the Digital Public Library of America, https://utah-primoprod.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=digcoll_byu_12JMHes/1928&context=L&vid=MWDL
MLA citation style
Heslop, J. Malan, 1923-2011. Retrieved from the Digital Public Library of America <https://utah-primoprod.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=digcoll_byu_12JMHes/1928&context=L&vid=MWDL>.
Note: These citations are programmatically generated and may be incomplete.