Cite

Autograph poem, signed, "Morgenschlaf"

MLA

Speck, William A. (William Alfred), 1864-1928. Autograph poem, signed, "Morgenschlaf". Box 14, folder 569. 1897 Mar. https://collections.library.yale.edu/catalog/16696074.

APA, 6th edition

Speck, William A. (William Alfred), 1864-1928. (["Box 14, folder 569"])(1897 Mar)[Autograph poem, signed, "Morgenschlaf"]. https://collections.library.yale.edu/catalog/16696074.