Music/As You Like It: excerpt titled "Under the Greenwood Tree"
MLA
Koch, Frederick R. (Frederick Robinson). Music/As You Like It: excerpt titled "Under the Greenwood Tree". Box 336, folder 1948. [1936]. https://collections.library.yale.edu/catalog/2066423.
APA, 6th edition
Koch, Frederick R. (Frederick Robinson). (["Box 336, folder 1948"])([1936])[Music/As You Like It: excerpt titled "Under the Greenwood Tree"]. https://collections.library.yale.edu/catalog/2066423.