F1229. Method of Working Scrapers.
MLA
McClintock, Walter, 1870-1949. F1229. Method of Working Scrapers.. Box 143, folder 7311. 1912. https://collections.library.yale.edu/catalog/10453007.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 143, folder 7311"])(1912)[F1229. Method of Working Scrapers.]. https://collections.library.yale.edu/catalog/10453007.