Cite

"Influence [of] electrical machines."

MLA

Hansen, Bert, 1944-. "Influence [of] electrical machines.". Box 12, folder 27. 1888 May 26. https://collections.library.yale.edu/catalog/32331983.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 12, folder 27"])(1888 May 26)["Influence [of] electrical machines."]. https://collections.library.yale.edu/catalog/32331983.