Cite

"Doctor Cushing during the operation on the 2000th verified brain tumor"

MLA

Boyd, Walter W. (Walter Willard),. "Doctor Cushing during the operation on the 2000th verified brain tumor". 1931. https://collections.library.yale.edu/catalog/15951282.

APA, 6th edition

Boyd, Walter W. (Walter Willard),. (1931)["Doctor Cushing during the operation on the 2000th verified brain tumor"]. https://collections.library.yale.edu/catalog/15951282.