MLA

Stein, Gertrude, 1874-1946. Notes for LCA; draft of letter: to Jean Cocteau; notes between GS and ABT ["Ir#Re#Sis#Ti#Belle."]; sketch; lists of books. Box 35, folder 727. n.d.. https://collections.library.yale.edu/catalog/32337608.

APA, 6th edition

Stein, Gertrude, 1874-1946. (["Box 35, folder 727"])(n.d.)[Notes for LCA; draft of letter: to Jean Cocteau; notes between GS and ABT ["Ir#Re#Sis#Ti#Belle."]; sketch; lists of books]. https://collections.library.yale.edu/catalog/32337608.