MLA
Civil War-Era Brass Screw Tourniquet Used to Control Bleeding in a Limb or Extremity. 1850. Robert W. Woodruff Health Sciences Center. Library, Box 2. https://digital.library.emory.edu/purl/781jh9w12v-cor.
APA, 6th edition
Civil War-era brass screw tourniquet used to control bleeding in a limb or extremity (Box 2). (1850). [Medical equipment]. Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/781jh9w12v-cor.
Chicago
“Civil War-Era Brass Screw Tourniquet Used to Control Bleeding in a Limb or Extremity.” Medical equipment. Health Sciences Center Library Artifact Collection, 1850. Box 2. Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/781jh9w12v-cor.