Couperus, Louis
MLA
McKenna, Stephen, 1888-1967. Couperus, Louis. Box 1, folder +. 1922 Oct 13. https://collections.library.yale.edu/catalog/10104412.
APA, 6th edition
McKenna, Stephen, 1888-1967. (["Box 1, folder +"])(1922 Oct 13)[Couperus, Louis]. https://collections.library.yale.edu/catalog/10104412.