Cite

LS : Weimar, to Heinrich Luden

MLA

Speck, William A. (William Alfred), 1864-1928. LS : Weimar, to Heinrich Luden. Box 9, folder 287. 1806 Dec 26. https://collections.library.yale.edu/catalog/2005317.

APA, 6th edition

Speck, William A. (William Alfred), 1864-1928. (["Box 9, folder 287"])(1806 Dec 26)[LS : Weimar, to Heinrich Luden]. https://collections.library.yale.edu/catalog/2005317.