Virgil Thomson
MLA
Stein, Gertrude, 1874-1946. Virgil Thomson. art, folder 556. n.d.. https://collections.library.yale.edu/catalog/2068669.
APA, 6th edition
Stein, Gertrude, 1874-1946. (["art, folder 556"])(n.d.)[Virgil Thomson]. https://collections.library.yale.edu/catalog/2068669.