Perch. The New York Times. 2012-05-24 [2013-12-05]. (原始内容存档于2021-05-01). Shedd, Charles E. Jr. National Survey of Historic Sites and Buildings: New York
Transactions on Education, Aug 1980, 23 (3): pp. 156–162 引文格式1维护:冗余文本 (link) Shedd, John C.; Hershey, Mayo D., The History of Ohm's Law, Popular Science Monthly