LS : Weimar, to [Wilhelm Reichel?]
MLA
Speck, William A. (William Alfred), 1864-1928. LS : Weimar, to [Wilhelm Reichel?]. Box 9, folder 294. 1829 Feb 14. https://collections.library.yale.edu/catalog/2005324.
APA, 6th edition
Speck, William A. (William Alfred), 1864-1928. (["Box 9, folder 294"])(1829 Feb 14)[LS : Weimar, to [Wilhelm Reichel?]]. https://collections.library.yale.edu/catalog/2005324.