MLA

Thayer, Scofield, 1889-1982. Flechtheim, Alfred. Box 32, folder 857-858. 1921-24. https://collections.library.yale.edu/catalog/17142314.

APA, 6th edition

Thayer, Scofield, 1889-1982. (["Box 32, folder 857-858"])(1921-24)[Flechtheim, Alfred]. https://collections.library.yale.edu/catalog/17142314.