Lappin, Margaret (outgoing), including copies
MLA
Mencken, H. L. (Henry Louis), 1880-1956. Lappin, Margaret (outgoing), including copies. Box 16. 1922-1949. https://collections.library.yale.edu/catalog/16741670.
APA, 6th edition
Mencken, H. L. (Henry Louis), 1880-1956. (["Box 16"])(1922-1949)[Lappin, Margaret (outgoing), including copies]. https://collections.library.yale.edu/catalog/16741670.